Why would you buy a compact then add an extended mag ?(my hands don't fit the compact well) it seems like that just makes it a full size with a shorter barrel.
I'm trying to figure out what want to cc. Already own a 6906 and a 22C.
Let me ask you this.. What do you want the compact for? If it is just a range gun, and it does not fit your hand well, then it is time to look at another model.
If it is for CC then ask yourself this.. If this does not fit my hand well, what does? Also, you say that your hands do not fit the compact well... how do they not fit well? If it is just a matter of your pinky "floating", then try the "extended" 12 round mag. It has a place for your pinky. Truthfully, if you make a point of shooting your 9c a fair amount, you will find that the problem fixes itself. I speak from experience. At first my pinky "dangled" below the mag. I made a point of shooting it a lot with the non pinky rest mag. While at first it was really strange and I did not do my best with it, I am stubborn and I kept at it. After awhile I noticed that my groupings were getting better and better. Then I noticed that I did not even notice my dangling pinky. I now naturally just curl my pinky below the mag. This even works with different small guns, like my Sig 938.
My husband did not do this and he still would rather carry the 9c with a 17 round mag. Me, I don't care either way. We do have some x grips, but truthfully we don't even use them with the 17 rounders. We found them to be more of a pain than anything.
So I guess you have to decide why the 9c does not fit your hand well. If it is the pinky, then that is easy to learn how to deal with, it is just conditioning. If it is something else, then maybe the 9c is not the model for you. Hope this helps.