Sure. It very adjustable. Just adjust the handlebars and seat to whatever is comfortable for you.

With some adjustments to the handlebars, seat, and suspension the bike will be fine for you.

1. yes.
2. only red, as i know

Yes they are twist type. No matter how you adjust the front, you can only get it to operate in 1 and 3, or 2 and 3. Adjusted it from one end to the other and there is no middle point where you can have all 3 gears engage properly or stay in gear. The rear was an easy fix to adjust to where it would engage and stay in all 7 gears and not be noisy, but the front is another story altogether. Packing it back up and returning it to the store, our Son rode it about a half a block before the chain locked up.

The recommended weight limit is 275 lbs for all 26 inch bikes but not all bikes are made the same. Bikes like the XR-200, XR-250, and DH team are all very heavy duty bikes and have a higher max weight limit. I've built a couple of these and I would say 350 lbs would be the limit.

My son has this bike. I would call the color a burnt orange.

For trail riding I would say it would be perfectly fine, but with the street riding I would caution it. The bike has a fairly nice suspension system but it was designed for mud, rocks, and trails not aspalt and concrete.