I have also lost days waiting for tire shops and alignment...as those are the only 2 things I don't do myself.
Once you have a tire machine you'll spend more time at the tire shop (outside business hours, lol) because their trash pile will be your best source for reasonably new used tires. They sell a lot of sets of 4 when 2 would do.
You wanna take used half worn tires and put it on bent rims and make it come out ok, you need a digital balancer to make that not suck.
My friend does this at Costco, and it takes longer purely because of appt mismanagement and backup, the work itself is quick.