Barnes has some load data for those bullets. I would think H322 would be too fast of a burn rate. I would try IMR 4895 first.
I sort all rifle brass by headstamp. There can be enough difference in case capacity between brands to make a difference in pressure. My pistol brass is sorted but thats because it was basically sorted when I started reloading the way I had it stored. I have heard a lot of guys dont bother...
I carry a G20 with night sights. I like the size of the G20 better than both the 40 and 29. If you're looking for something optic ready you could also look at the new M&P 10mm. It can be had in a 4" or 4.6" barrel.
You're going to have to go above book max loads to get there. AA#9, Longshot and Blue Dot all being good powders for full power 10mm loads. Start low and work up slow with a chrono. What bullet are you going to use?