Hey Guys I'm new to this so forgive me if it is bad
I have daedric armour cause I like having the extra protection although may not be needed and dragonscale would work well too (with fully enhanced daedric I have 1168 armour rating). I have enchanted the armour with as much archery stuff I can using a grand sould gem, 100 enchanting and most of the enchanting perks that give better enchantments and stuff. So you drink a potion (enchanters elixir is the strongest) this increases the % that it raises it and enchant everything you can with archery stuff. I then put on more carry weight, breathing underwater, faster health regen, more heavy armour and more stealth. It works well. Improve it either before or after enchanting doesn't really matter and use a blacksmiths elixir to help improve more as well as 100 smithing and all the perks and stuff as well as better smithing gear.
Before Dawnguard. I had a daedric bow improved using blacksmiths elixir to help improve more as well as 100 smithing and all the perks and stuff as well as better smithing gear and daedric arrows. I had it up to 418 damage plus 22 i think from the arrows and I had 35 fire damage and 35 shock damage. The fire damage is best against trolls and the shock works well against mages and stuff cause it drains the magicka.
After dawnguard. Enhanced dwarven cross bow. The same as the dadric bow except it does 430 damage plus 14 for the bolts and 10 for either shock or fire damage from the bolts as well as 35 fire and shock and ignores 50% of armour which makes it destroy.
Perks are pretty obvious either heavy or light armour up to you which one you use. Best heavy= daedric even after dawnguard. Best light= dragonscale. All archery things stealth I found really helps especially with 3x damage nothing survives really. You can just run through as well
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Before I made my own I just had an assortment of random things i had found around the place and at one point I had some convict come up to me and give me a helm which had 20% better archery which was pretty cool at like level 10. Pretty sure it is a random encounter. Anyway hope this helped anyone and that you guys didn't get too bored reading have fun playing skyrim great game