Im getting close to lvl 90 and my armor is good with 115 damage and 32 defense but critical is on the low side. What armor should i get at lvl 90?
Try investing in a pet. Lots of wizards (including myself) higher up in the levels try to obtain and train damage and critical dealing pets, so you could try that.
You shouldn't worry about critical because enemies can block them anytime. But if you do want to increase your critical rates, look into Hades gear, or just wait 10 levels until you can unlock Darkmoor.