Okay decided after hearing things about enhancing magic's affect on gain spells, and the projected enhancing skill gain for levels 91-99, as well as current gear options.
Base skill:
341= +9 to stat
+16 (max enhancing merits)
357= +10 to stat
+15 (Warlock pants)
373= +12 to stat
+15 (duelist's gloves)
388= +13 to stat
+15 (estoqueur's boots+2)
403= +15 to stat
+6 (estoqueur's cape
+3 (Fulcio grip)
412= +16 to stat
+7 enhancing torque
+3 augmenting earing
422= +17 to stat
+3 cascade bekt
+12 Anhur robe
437= +18 to stat
Thats every piece of +enhancing skill gear at max potency rdm can wear, and tack on the skill we get from levelups, i heard its +7 to each level so...
437= +18 to stat
+35 (7 skill x 5 levels)
472= +22 to stats
+28 (7 skill x 5 levels)
500= +25 to stats
so squeezing out every piece of enhancing skill gear (currently) we will be able to juuuuust hit 500 skill, if no other enhancing skill gear is added, or if there arent any augmentable pieces i dont know about. I think thats pretty nifty, but ill be closer to the 480ish skill area personally.