you can easily run higer rpm's with the right kinda money

Honda cranks are strong so thats fine to keep stock, you may want to upgrade the pistons and connecting rods....as far as cams for the B16A head I am a big fan of Crower cams but Toda cams and Jun cams are awesome choices but a bit pricey. You just gotta make sure that if you get some aggresive cams that they work in conjunction with the pistons you get in order to avoid piston to valve contact one thing to help that would be upgraded valve springs which are a must with the aggressive Toda's and Jun's as well as some of the Crower's. When choosing a cam gear dont go for anything with less than 4 adjusting screws/bolts....DC's or Skunk2's are good choices. Good luck!
