I know you made your decision, but I will jump in regardless.
I shoot USPSA with a G17 and conceal carry a G19. I use an inside the waistband holster from Kaluban Cloak that I outfitted with the IWB clips from Comptac. I'm big enough and built to be able to carry a midsized pistol. Not all are. I can carry my pistol with a t-shirt and no one knows. 3:00 works for me. When I made the change to Glock I wanted to be able to maintain one set of tools, parts, and magazines for all my handguns. Worked out well for me. Glock also lacks a manual or grip safety which is mandatory for me in a carry pistol. I also carry with a round in the chamber, and feel like these pistols are proven performers in that regard.
It should be a priority to find a quality holster that not only allows you to carry the gun, but has good retention, preferably without a snap, and completely covers the trigger. Raven, Crossbreed, Kaluban Cloak, and many others fit this criteria. A good holster is worth its weight in gold.
A little education and a lot of practice. YouTube or any of a variety of books will help to educate you about the techniques and laws regarding CC. I still practice drawing, though not like I used to. Muscle memory carries the day here. After 5000 draws things really come together.
Good luck.