you will be fine, i don't suggest that you shoot that ammo all the time, but with the rice of it i am sure that you won't. i think the glock 19 will be able to handle that and then some, the only problem i see with shooting alot of +p+ is increased wear of the weapon, and such, but that is alot of rds and over quite a while.
do try them out to ensure that they work and function in your weapon prior to carrying them.