Just go FULL AUTO PILOT.. The EZpilot is so so.  Lotta RTK Auto pilot systems out there used, just takes a little searching.  I got 1 for neighbor 's 8300  a few yrs ago  RTK FMD(older screen) Nav11, Valves Harnesses for $5000.  I like FMXs because I have  a "few"...12-14.  & I want stuff the same.

 I see RTK 750s in classifieds for $4250-4500, Need a nav11, & valves, & harnesses. Could  maybe get lucky for $7-8000