Ooo, I definitely want a +2 Sex bonus, lol .Gnome is the way to go for wizard because of the Intelligence bonus (the Fatbeard in me still thinks gnomes should only be illusionists, but that's my problem). The +2 to Intelligence isn't huge, but over the course of an adventuring career (or even a few sessions) a +1 to hit on spell attacks and a 5% better chance of enemies failing their saves will add up.
Second place would be high elves with a +1 Int and +2 Sex (for AC). The extra cantrip also gives you some flexibility.
For feats I love Spell Sniper. You get a damage-dealing cantrip and double the range of all attack-roll spells and ignore 1/2 and 3/4 cover. The Lucky feat is also a great one. If you choose the Diviner subclass, the Portent ability can be fun for you and infuriating for the DM.
I did look at the Gnome and I hate Gnomes, but that is my problem...still, a +2 INT bonus is nothing to dismiss...maybe a could be a really tall almost human-sized Gnome.
I was thinking variant human for the feat. The problem as I see it would then to be to add +1 to INT and have to waste a feat for a +1 to INT somewhere else. So if I went human I would consider taking Lucky or Alert (who doesn't love a +5 to initiative?) Then I would want to use Resilient to get the Dex to 20 and get proficiency on Dex saves and again on INT, but the saves bonus would be wasted so maybe Observant or something. Of course I could use the +1/+1 to two different ability scores, but then I don't get the cool save bonus.