60 or so GPS is about all it gets.
At 1300 miles your scoot is not really broken in yet, so you might do a little better down the road. But not much. It might top out at 57 or 58 GPS. Some folks on this board have done all kinds of things to try to increase the top end, but all have pretty much failed. The issue may be with the gear ratios, as the acceleration is quite strong.
I put 14g sliders into the variator, and nothing changed. 60 or so seems to be it on this bike.
My SYM HD 200 OTOH does 73 GPS no problem.