Have 4 1/2 up 1" pull back, mounted reverse, with stock cables wires and brake line. Had to reroute the front brake line, but works. Also rotated the bars up just short of the windshield, a 19" Memphis fats. Thats pretty much the limit, but makes the riding position much better, for me. I'm 5'8" with 31" inseam.
Do a search through the 800 forum and thee are a couple threads on the forward control extentions that people have made. They will most likely send you a PM with instructions to make your own. Easy to do. All you really need to do is duplicate the mounting holes a couple inches farther forward and maby even an inch or so higher if you like. I believe 3" fwd and 1" up is the most I've seen so far.
I actually started making a set of forward control mounts today. I went 4 inches forward And 1 inch out, not up, have them roughed in and mounted. So much more comfortable. I will snap some pictures in the morning if I have time. So far have only needed a drill and grinder.....
Here is what i have so far, just trying to mock up the right size to feel most comfortable, I am 5'10" I have a 31" inseam. these are sitting at 4 inches forward and one inch out. I think i may back off to about 3- 3.5" to get the perfect fit.