Try harder difficulty. Adept is terrible.
I play at master difficulty with a self-imposed limit of not using any fortify enchanting potions. So my smithing and alchemy gear only gets me to 25% better per piece, or 100% for the set. This gives 100% improve smithing from apparel and 120% improve smithing from potions. I then wear 4 pieces (gauntlets, ring, necklace, helm) of +40% damage bow, for a total of +160%, and 3 pieces (guantlets, boots, necklace) of +40% one-handed, for a total of +120%. Plus, of course, all 5 power perks for both archery and one-handed. I also enchant the weapons with 45 fire and 45 shock damage. (Armor is well above the 567 cap, I use Ancient Falmer. Magic resist is also at the cap of 85%)
As I said, the Legendaries are nothing special so far.