Well we have a guide written by myself on this very topic which is located here.http://eldersouls.com/page/index.html/_/guides/skyrim/boosting-armor-weapon-and-item-stats-r20Just to summarize on come key points, I would recommend getting 80 alchemy and getting all 5 tiers of the Alchemist Perk. Getting that and doing the method on the guide will totally max out your gear. However, if you don't want to get 20 more levels in Alchemy, I recommend going to Alchemy shop to Alchemy shop until you find an effective Fortify Enchanting potion (20% better or 25% better recommended) and an effective Fortify Smithing potion (40% better or 50% better are recommended). Then, with 4 grand soul gems, drink the Fortify Enchanting potion and immediately enchant a necklace, ring, gloves, and chest item with Fortify Smithing. Then wear your newly made Fortify Smithing gear and drink your Fortify Smithing potion and immediately craft your weapons and armor. This is pretty much the simplified version of the method used in that guide.