I would agree with Dan, but also would have liked a 30" at 35,000.  If you get enough water the 30' could have done as good. 

I would not include the "extra" planter pass unless that is how you are going to do it on all acres.  Then the twins would have to pay for two pass, if you are "really" going to do it you would have a twin row planter.  Who has time for a extra pass on all his acres?

Good test and I think I will do one next year!!  but I will be pushing 40,000 on pivot!  Maybe more.