Low pressure is the ticket. I've run Anakees (on my DL1000) at 18 front/20 rear. Huge improvement off road. (my Vstrom did three major Baja and Mainland Mexico trips ... lots of off road mixed in)
The Anakees can handle low pressure no probs. Much nicer control, especially braking downhill and leaning into off camber corners. But you know all this from your Beta trials bike!
Very wise to give yourself some time to adjust to riding the big girl off road. When I first go off road on my DR650 ... I really SUCK! ... especially if I haven't ridden off road in a while. It takes me at least a day of hard practice to re-learn it all and get used to riding the monster off road again. The first day is NOT much fun. As days go on ... it actually gets easier.
Knobbies will be a God send.