Which to sell? You like both and can't really decide? Why sell then?
You kind of sound like me when I first started. I didn't think I'd own very many guns, so when I bought my S&W 65LS I sold my Taurus 82. I wanted a .357mag and since I knew I wouldn't have very many guns I didn't see the point of two medium frame revolvers, both of which could shoot .38spls. So I sold the Taurus and I regretted very soon after. Now...I have 4 more or less medium framed revolvers (2 K-frame .357mags, 1 L-frame .357, 1 Colt PPS .38spl) and I think I've barely started.
You like both guns, do not sell. Never sell a gun you like, you will find yourself regretting it (I've regretted guns I liked but that I replaced with something I like far better). If you find one that is a lemon or that just doesn't work for you, then fine sell it. But when you like it, keep it! You'll regret it, and it will either cause you frustration when you think on it later, or if you replace it then it will just cost you more down the line (since it will inevitably cost you more to replace it than you got for it when you sold it).
If you can't afford some of the other stuff yet, don't worry, save and you will. If you CCW, I'm guessing the compact can wait anyway since the Glock 17 is pretty lightweight and it is wintertime (so you'll probably be wearing more layers). If it is too bulky for you to carry then when you get the 1911 you'd be surprised at how the narrow design makes a huge difference (assuming it isn't too heavy for you). Worst case, compromise and make your first 1911 a 4" gun that you can carry more easily
. Or, if you are uncomfortable with trying to conceal a full-sized gun, get the compact and wait on the 1911 (unless the compact
is a 1911 as per the previous sentence). Just whatever you do don't see a gun you like.