Welcome, you picked a solid choice for your first handgun. Even though you think you don't have a large budget, there's a lot of dry practice you can do at home without spending a ton of money on gadgets. When you're at home and got nothing to do, practice drawing and reloading empty mags. Draw, click, reload, repeat, you can even do it from slide lock. Congrats again and hope to run into you at one of the HDF shoots.
Anyone in the know, (obviously Bota) knows dry practice is where it's at and is advised by all legit instructors.
No ammo cost, do in your own home, builds muscle memory and firearm familiarity.
All you need is a couple mags and some snapscaps/dummy ammo.
We strategically put post it notes around the house where discharged projectile ''may" go to practice.
No need to rent to try, go to both FunShoots.

The fact that you've " decided on the Glock 19" primarily because "my wife could shoot it well." is a good start.

(Keep her happy and you'll get less flak when you buy more guns

)
With your "$150 max a month towards saving towards additional guns, ammo, parts,", pick up a .22 conversion ( again I recommend the TSG for keeping the gun more to actual 9mm weight and their service has been great) and you'll keep your budget down.
This will also be an advantage when you bring your daughter into the game as then you'll be buying ammo for three!
