Thanks for the tips. I'd call myself average size, though I might be a bit small in actuality. 5'10" around 155 lbs.
The Sims I found is size 156, comes with riser, Alpine snowboard boots (no size or brand, I will ask about this. However, I don't yet know my boot size), Burton Race Plates all for $200.
The Burton is 162 (closer to my current board), and only comes with the Burton plate bindings, $145.