Bill
I am planning on going through the same process on Madcap (old Thor 358). I talked to the Interlux guy and he advised me to roll the Interprotect 2000E. He said I could save 1-2 gallons for 5-6 coats. Then I am planning on spraying the VC-17 2-3 coats. As far as for Spraying VC-17, make sure good clean tip or it splatters. Recommended thinning is 10% on VC, but I have cut it up to 30% and have not noticed a difference. Answers to the rest of your questions would be helpful to me as well.
John
Madcap
358