So a short cage would be fine by the sounds of it.
I don’t know if SRAM are exactly the same sizes as Shimano…
But I’ve just done a Saint shortcage with an 11-34 mech and IMO it’s too short for a big cassette… Or at least, it can be. Taking into account chaingrowth (and it’s quite a stretchy bike) it’s impossible to get the tension right at both ends of the cassette- if it’s reasonably tight in the 11T, it’s too tight in the 34T when compressed. There’s just a limit to how much chain the cage can pull.
It works out OK as the 2 lowest gears are just crawlers anyway but if I ever ride off anything bigger than a kerb in the 34T it’s going to pull the mech off… Wouldn’t be acceptable on a trailbike though as you really need all the gears to work fully.
My other bikes are all medium cage and it gives it that much more chain control. Obviously ymmv, depending on bike etc.