Be sure to check out the RPPR actual plays on the main site
The standard rules are roll 4d6 and get rid of the lowest die but if you'd rather stick with those stats then all the more power to you...though not to your character.
Can't fault your choices there, though you may want to have a look (if you haven't already) at the subtle updates Pathfinder have put in place. It may sway you off wizard.