On my third toon, Dark Elf Assassin Archetype with deep dual wield, light armor, some archery (dirty dragons...), alchemy, smith, and sneak.
Looking at smithing and I can't determine the best course of action to go with as far as perks for the smiting tree. I only have enough by 50 to go heavy or light. I would go light for the armor sets OR go heavy side for weapons.
What have my other fellow assassins gone with during the course of their adventures?
Depend of what armor you plan to wear, if on high end, you plan to use DB or thief armor, then you will have no use of light armor crafting. If you plan on using dragonscale, you might as well taking heavy side, since it lead to both dragonscale and dragonplate. If you plan on elven or glass armor, go light.
1 or 2 daedra/ebony weapon are easier to find/loot than 4 matching piece of armor.
Take into account you may want to use daedric quest's weapon, which partialy remove the need for crafting your own weapon, except for improving them twice as much.