Play style troubles deciding.

Okay I know this will sound like a pain in the butt.
But I am really having a tied up time with what play style I am going into?
I decided Assassin /theif?
or warrior /theif?

or warrior build with light and heavy weapons.

But I am Just having a pain trying to decided with a playstyle which will suit my play mode the most.
I really want to specialize in magic with Assassin light armoured build.Or just heavy armour build and punch the fluff out of any enemy in skyrim who apposes me.
I love heavy armour because it's defensive with offensive.
Light armour is good but just using one handed and archery for me is not enough perks to invest in.

atm I am a warrior nord deciding on heavy armour and two handed weapons with archery and one handed combined. plus I get plenty of perks to increase and built like a tank I love this build.

But then this voice in my head says "oh wait, what about theif/assassin?? yeah you know you like that?
what do I do? How do I decide on this?

I so agree with this thread. I have 5 or 6 characters created, all with certain styles. At this point, only my mage and a sword & board (something I've never played) seem to appeal.