I wouldn't worry about having both feet on the ground. My other main ride is an XR650L. it is basically a horse. There is no chance I get both feet on the ground. Even one foot on my toes is a challenge, and I'm over 6 feet tall! It's nice to be able to plant both feet, but not necessary.
I would be concerned with ground clearance if lowering the bike. I know many do it, but I've already dragged my pegs and exhaust, and smacked my oil pan on a speed bump, on my '74 cb750 without riding like a hooligan. If it was dropped even more I think you'd start smacking stuff a lot more often. At best, you'd damage your bike. At worst, maybe loose control.