Right now, today ... I would spend $500 to get a second Glock 19 to use as backup, about $500 on spare mags, $500 to get 2k rds of 9mm FMJ and $500 on training.
Or perhaps I would put the money toward a good safe.
Id take the $$ and go down to Alabama to the CMP and build my own M1 Garand in .308 in their armorers course with $$ leftover to buy ammo. My Springfield M1(30-06) is lonely.