Fairly fresh newbie

[Nagoya]

+25 INT +5 STA/STR would have been the more traditional choice for you.

you did +20 INT +10 nothing (WIS is unfortunately completely useless on a wizard, not even any kind of marginal contextual use, 100% nothing [You must be logged in to view images. Log in or Register.] )

Humans already have the best STR/STA of all the wizard races, so you're not losing much there.

So you lost 5 INT, at your level this is about 10 max mana. (at level 50 it would be about 50mp)
Your level 12 damage spell costs 60mp, and your total mana pool will be around 250mp.
Check how many times you have only 50mp left and can't DD and that sucks and having that extra 10mp would have saved the day. I bet this is will be very close to "never". The most important thing is mana regen, and for that your stats changes nothing. the only mana regen mechanic Wizards get is Harvest at level 34, Flowing Thought X on some very high end items, and your epic (and some other crazy items like Manastone).

TL;DR don't bother. your character is very fine as it is. however if you think you will hate you for this in two years, you could also restart with +25 INT +5 STA/STR and get to level 10 in a week... but it is far from being necessary. (if you do reroll, i recommend picking Solusek Ro as a Deity for http://wiki.project1999.com/Imbued_Platinum_Fire_Ring which are cool on Humans cause you have a high base STR)