Excellent choice for a first gun, with one problem...once you use the P7, nothing else will seem as good. My first gun...a P7M13. I've never sold it (thank goodness). Then went to about 3 other quality handguns over the last 10 years, but NONE feel as good, shoot as well, have a better safety mechanism, or seem as concealable as the P7. Finally, I just went out and bought one of the HK refurbished P7M8's, in ADDITION to my P7M13. I've stopped seriously considering anything else now.
You will have to go through this too, to understand. Just do one thing...NEVER sell the P7 you buy. You can add other guns, but DO NOT trade the P7 for them. You will regret it if you do.
Also, move with reasonable haste...while Colt may not succeed in buying HK, clearly they are considering offers...who knows with liability issues if they will remain selling to the public. Plus, all the HK refurbished P7's are slowly going away.
The HK refurbished P7M8's seem pretty good, and can be found for $600-$750. Only problem is slightly discolored and loose white dots in the sights (the sights aren't loose, but the plastic dots that are in them are), and sometimes the slide coloration is a bit more reddish brown than black. Watch out for the sight problem...one of my rear plastic dots in the sight fell out (like everything with the P7, even the sights are overdesigned...the "dots" are actually the back end of a plastic cylinder about 3/8" long). I found it, and carefully glued it back in place. Thats the worst problem I had on the refurb.