I would sell the Glock and then use the money to buy the best concealel carry gun you can find. For me it is the Keltec PF-9 with CT laser and belt clip. All for under $500 (pre-hysteria prices).
Having said that, if you can, keep the Glock and buy the Keltec, because it is a gun you shoot because you have to, not fun to shoot, lots of recoil. If you want one gun to do both (fun and CC) then Glock 19 is definately the way to go. Instead of a holster get a belt clip from Sinclair, it is cheaper, more comfortable and less bulky.