All right, I know I just cast Wall of Text, again, but that's because the simple answer is, "There is no simple answer." If what you want is the absolute best performance for you, the player, and your character, you're going to have to apply the alien (Unless you happen to be German) concept of a Gestalt. You have 2 extreme choices, pile up the most powerful individual enchantments, or put together a System where every piece complements every other, and Multiply, rather than adding.
So, if you'll indulge me one last illustrative analogy, allow me to compare it with another complex system that has nothing to do with Magic. The Tuner, and the "Rice Car". Even if you aren't familiar with the latter term, I'm sure you've seen, and heard the Civics with a chromed Exhaust tip you can stick your fist in without touching the sides. That's pretty much the signature part that separates someone who actually knows how pieces fit together from Poseurs who thought the Fast&Furious movies were really cool, but have nothing but Fantasies to back them up.
The thing is, you can't get more air Out of an engine than you put In, so if you're Tuning a racecar, that's the LAST piece you put on. Back pressure is a butter zone that ultimately determines Power Efficiency to turn every BTU into expansion to push the pistons, and drive the shaft to turn the wheels, and push against the pavement to go thataway with a quickness. At one extreme, you can just block off the tailpipe, and the engine will stall. Congratulations, you've created a half ton door stop. At the other extreme, you hack it off at the exhaust manifold, make a lot of noise, and blast mostly unburnt fuel into your engine compartment. This reduces the fuel efficiency of what was an economy car to the consumption of a turbojet, and actually transfers less energy to the wheels, and pavement.
The Fast&Dirty trick is to jerk the pipe straight, hack off the muffler, and put a nickel plated coffee can on the end so it sounds like a race car. This eliminates the Back Pressure the Dual Overhead Cams, and performance timing chip need to regulate fuel, ignition, and throughput to get every footpound, and horsepower out of the gas tank, and onto the pavement. However, if actually going fast is secondary to your friends realising how cool a racer are, then this technique is about as effective as painting it Gofasta Red (Games Workshop) sticking on "Sponsor" decals (No corporation on Earth sponsors illegal street racing) and bolting a bookshelf spoiled stack onto the trunk. (On a front engine, front drive car, downforce in the back actually reduces the power going to the pavement at speed, and aerodynamic effects like that don't even kick in significantly below about 75MPH.)
A real mechanic starts under the hood at the Intake. This determines how much air you have to mix with the Fuel, and make it go "BANG! in the cylinders. Next, you set the fuel pump to spray in just enough petrol that you use all that air without blackening the insides with unburnt hydrocarbons, gumming up the valves so they don't open on time, and plaiting the spark plug terminals so they don't arc reliably, not to mention wasting a lot of expensive gasoline, so you have less money for parts, and have to weigh yourself down with more tank so you can cruise all night. While you're in there, replace all the internals with lighter weight ones so the mass that has to stop, and go back the other way 4 times per Otto cycle (Suck, squeeze, bang, and blow) per piston doesn't use up so much horsepower on inertial losses. And finally, before you close the hood, dial in all the timing so that it runs sustainably at peak efficiency, and check the cooling to make sure you don't burn it up at the redline.
THEN, you start on the Exhaust. Now, someone who doesn't know how to do all this in the first place is probably also not going to understand other complex multifactor interactions like Aerodynamics, Handling, and How To Drive A Race Car. That's fine, for burning up tires in the parking lot, cruising slow enough that they can hear your high drain, and heavy weight sound system thumping out Tek 9ine's "Night and Day", and driving your half asian girlfriend to the motel because even she's too big to make out with in the back seat with the 1.5 farad bosting capacitr, "NoX" tanks, and sub woofer.
What does this have to do with Enchantments? First, do what you did, figure out what the best pre-enchanted outfit is for your particular build. Then, get your Enchanting up by whatever methind you feel comfortable with, and finally, use the open slots like Necklace to Dial In the last bit of performance out of your now completed build. Or, you can rice out from the beginning, make Destruction free, and never have to learn to build/drive a performance Mage.