Mont And Blade Trainer Twin Tip Size Help Please!?

Twin tip size help please!? - mont and blade trainer

I'm 5'6, 5'7 ISH and shoveling snow. I'm going to the park and do things, but I think it is difficult to rails and boxes. He was in Mont-Tremblant, and the guy who looks Falls, said he could not because the leaves snow belt and do not let yourself fall.

So, now I want a personal consultation, but do not know how big they should be. Help would be great!

Thanks in advance!