I have a few A&H 320/420's... and a bunch of Remington 700 ML/MLS, Ruger 77/50's, and a Savage 10ML2.
I prefer the Remington 700 MLS. Then the stainless "all weather" Ruger 77/50's. They are lighter handier rifles. I'd bet seeing your probable user is a kid this "ballance & weight" is more important than you may realize.
Also I sell 209 sealed breech set ups for the Remington 700ML/ MLS & Ruger 77/50. I've got plans to make a similar system for the A&H but things keep getting in the way.
If you get the A&H make sure you get the owner's manual (a copy is available here at my website):
https://www.badgerridgeind.com/austinhalleckinline.html
With any of those slam fire #11 inline set ups: Clean the barrel, breech plug, and the bolt after each time you shoot... with A&H the bolt has a recessed hex head set screw that must be loosened before tearing it down... which frequently is not and strips the threads on the firing pin...
YMMV,
Yours
Tom