It would be plenty of power.

Also, what are the differences between the G1, G2, G3, GS, GQ versions?

The G1 is a pretty mediocre unit I wouldn't bother. Plenty of better options out there.

The G2+ G3 are both a million times better, the g3 is essentially a newer slightly better g2. It's biggest advantage is that it's smaller. However the 550/650w units only have a 7yr warranty. You'd have to go up to 750 to get the 10yr warranty.

The GS isn't really worth it. It's not a bad unit at all, but it's poorly priced. You could get the G2/G3 which are better for the same price. Essentially a Seasonic G series, with some changes.

The GQ is a good option, however the G2/G3 650 is currently cheaper/the same price and since it's better just go with that.

I'd go with the 650w G3: https://pcpartpicker.com/product/y88H99/evga-supernova-g3-650w-80-gold-certified-fully-modular-atx-power-supply-220-g3-0650

More then enough. A good 450W psu would also be plenty. G3 is the best and most modern of those you listed. G2 was its predecessor and still a very good psu. G1 you should avoid its not that good. GQ is semi Modular. GS can't remember.

So i would recommend the G3 or G2.

Here's my write-up of power consumption, my similar build maxes at ~440W: https://pcpartpicker.com/forums/topic/244738-estimated-vs-actual-power-consumption

As mentioned, a 550W to 750W G2 or G3 would be plenty. I have the 650W G3 and it's been solid.

Looks like they have a 750W G3 for ~70 currently: https://www.evga.com/products/product.aspx?pn=220-G3-0750-X1