Has to go 2nd day air even though it obviously wouldn’t ever be in the air. Truthfully it would probably be cheaper to have a local FFL ship it to a local to you FFL using the postal service
One of my first guns I got was a Remington 870 20 ga youth model when I was around 9. Damn thing kicked harder than my dads full size 12 but I still put many a boxes of shells down it.
Learn to use your belt, pant pocket or other solid objects to rack your slide using your sights. Watch some one arm training videos where the shooter has been shot in the arm and still has to clear jams.