So I was thinking about doing this type of build. I want to put my perk points in destruction, archery, stealth and conjuration. Do you guys have an idea to make this more effective?

I was thinking along the same lines...really wanted to make use of the awesome DB caster gear...since the melee gear is hideous.

Destruction
Sneak (Getting up to the 15x damage)
Conjuration (Bound Dagger with the +50% bound weapon damage perk)
Illusion


Then I discovered that for some reason Bethesda decided to take out Bound dagger and now my dreams are crushed. You could do something similar and rely on bound bow. Archery perks + Sneak perks + 50% damage bonus from bound weapon could be pretty powerful. You can go down the frost route for destruction and use it to slow your enemies so that it is easier to kite and continue dishing out damage with your bow.

That sounds like a great idea, I'll probably end up using this idea for my first character