I am 6 foot 5 inches, I weigh 290 and I play pro football and am a compeditave wieght lifter.
That should help.

 

Its not a question of you physically being able to do it, but the fact that in certain conditions it could be a real tiring task to keep kicking that thing over. Out of all the quads and trikes I have ever ridden the 350x motor is by far the hardest to start when its cold. With that said I would'nt let that stop me from buying a 350x trike (for the right price) those things are awesome.

Let us know how it turns out, its going to be one sweet motor with lots of power!

 

Murphyslaw. I weigh 310 and can stand on the kickstarter of my 250x and it won't budge. I can only imagine what my 454 will be like. The are probably a little higher compression than yours though.

 

It does'nt matter anyways, yesterday I ordered an electric start kit from Goki for $300. Im going electric!!! The guys at Goki said it doesnt matter what I punch it out to, this thing will start a tractor motor and it will probably last the whole life of the bike. I figure if I am going to sink this much money into it I should go all out.