I'd think two handed shooting the 19 would be okay
I don't think it would. Even though a fully loaded G19 is about 2.5 lbs, arm fatigue from being in a shooting position and the repeated recoil impulses may actually be more damaging than a single 5lb lift.
After having wrist surgery last year my doctor told me not to shoot for at least 30 days. It was the worst prescription I could have received. However the young gifted surgeon knew exactly what he was talking about.
You will have plenty of for shooting after your body heals
“There are no dangerous weapons; there are only dangerous men.”
― Robert A. Heinlein, Starship Troopers
"Don't come into Fort Bend County and start waving guns around because you could leave in a bag."