well we equipt TRV (SRV offcical touring tribute) - with a setlist of exclusive rigs for this purpose, - Mostly fender brownface and blackface delux's with a few editions.
With SRV you need the tightness of the bass strings but looseness of the others, its hard to get via a normal rig (He used varible string gauges same as Hendrix used too), so a lot of post is needed, - but you can start with putting your strat on the neck, raising the "Clarity" and "Definition" until you get a equal balance of his !Quack! sound.., then adjust from that point..
Good luck though!
Are those rigs all instant-ready (without pedalboard before the kemper) or are those rigs amps recorded on the edge of distortion which are to be used with pedals in front of the kemper?