I was looking at all bindings but I got a great deal on Burton Custom EST bindings. So far I have
Burton Mr Nice Guy
Burton Custom EST Bindings
Would it matter if I got boots that were a bit stiffer? Like a 6 or 7? Because I think both my board and bindings are in the 4-5 flex rating.
The reason you got a "great deal" on those bindings is because they're junk. If you were bound and determined to stick with Burton, you should've gotten some Cartels or Malavitas.