At low levels, you might want Point Blank Shot so you can take Precise Shot to avoid the -4 penalty to fireing in melee. That penalty at low levels is pretty significant, although two feats is a pretty steep cost for a sorcerer.
Once you get to the mid levels, your BAB, Dex, and other factors should make your attack roll scale faster than your opponent's touch AC, and it won't be as necessary. So, your starting level and how long you think you'll play the character will both have a big impact on how useful these feats will be to you.