The problem with the 200 is that it is just a more capable version of the 120 with more power. It is only longer, not taller or wider. Chassis wise, it does not fit a larger rider. I almost checked a couple for the kids but decided against it after I found a 2000 Indy 340 Deluxe for sale. (That I sold to the guy I just bought it from three years ago, lol.) I bought it back, made some low cost mods that changed it into a KILLER kid sled. I should probably start a build thread, my 6 year old has had a blast helping me with the mods. The 340 was a disaster as it came from Polaris, but with some adjustments it is a SUPER cool kid sled.
We narrowed it 3-4 inches, dimple died the running boards, it already had a 1.4 kitty track on it, lifted it front and rear with skid relocate and taller spindles, RMK skis, chopped the windshield, and modded the brake lever assembly to fit little hands.
He rode it around the yard the other day, he was a happy little dude. Going to take it out to the snow this weekend and see what it will do. Electric start makes is a bonus.