Skyrim is quite simple once you get used to it. If you are on PC and like to be the best I would recommend the 'tgm' console command. It makes you unkillable with unlimited Magicka, health and stamina. The levels and perk system has been designed so that you can't be an expert Mage and a warrior, it is to create balance.
Also you have to level all skills to 100 to get to the max level (81) So do you really use all those skills?
The armor cap is 80% or 567 rating, this can be achieved through smithing and perks.
Finally, remove alchemy and enchanting. Are you serious? Are they that complicated? Think about what would happen if they were removed. What next, magic is too tricky, remove all schools and replace them all with Fire spells. Combat to difficult, the OHK Warhammer.