Hi, thanks for your video.  It's a great introduction to all the options!  I'm considering the RadMission, but am concerned about the size, as I am 6' 6".  While RadPower's site states that it is comfortable for riders up to 6' 4", you mentioned in your video that you felt like you maxed out the bike at 6' 0".  Could you give some additional comments on sizing?  In my area, I have no way to try the bike before buying.  Thank you!