I'm 6'4" with a 35" inseam and I find the Strada very comfortable once I've removed the rubber from the pegs. The only problem I'm experiencing is with the back brake lever, which is a tad too high for my foot. I'll probably just solder some piece of metal plate between the stop switch and the metal flap of the lever in order to lower it down. On the left side I lowered the gear lever by two positions (the third would touch the base of the peg). I drive in an urban environment, but I can see the lower gear lever as being a problem when doing offroad in the Terra.
These ones: http://www.touratech-usa.com/Store/...-BMW-F650GS-G650GS-Single-Sertao-R1100-1150GS bolt straight on the Terra. I have them on my 1150GS, and will get them on the Terra as well. Along with a PowerMadd or Rox Risers, the Terra should fit most of mankind, leaning towards the upper end of the Bell-curve!
Just to add my two cents... I'm 6-4, with a 36" inseam and the stock Strada fit me fine for a 2000+ mile ride along Route 66. I used a sheepskin seat pad to help with the seat height. It is a very comfortable bike, for me, YMMV.
Or save yourself a few bucks and get the ones for the F800GS, which also bolt right on. http://www.touratech-usa.com/Store/...200GS-not-for-Adv-2005-2012-Oil-Cooled-F800GS