I'd finish the AR.
Use the money and buy more ammo and mags for what you already have
No reason to go without just because of a backlog. Tell them you want the G19 model but then settle for the G17 with a price break.
sold out huh? I will sell you mine for 150% of MSRP, but only because I am a nice guy.
The gun is fun but does not serve much of a tactical purpose.
There is no substitute for a .45...JC
Everyone should own a 1911.