Those 760's wear quick so you won't have to wait long. Dunlop 606's are good for rougher stuff, and maybe the Michelin T63, just not sure what sort of mileage you'll get, but my bet is more than the 760's. Heidenuas if you can get the rear are a good 50/50 tire, not a bad price and good miles onthe front and so so on the rear.
Mine with the 48's and +10mm spacer from the supplied one seem a little stiff. Still haven't tested well enough though. It's very hard to get a true feel one what to expect when switching from a DRZ to a G/S.