Prep right before painting frame after sand blasting

[Slowguy]

So I’m 95% done blasting the frame. Looking really good so far. I have to do my chores in stages so it will inevitably have some light surface rust when I get the time to get it coated. I’m using the pro 15 with chassis black on top of that. I knows it fine to put por15 right on top rust but I’d really rather wipe the light surface rust off right before I por15. Any recommendations? I used some “Krud Kutter” before and that phosphoric acid is like rust magic but I want to be sure that’s ok right before por15’ing. Figured spray down with krud kutter then hose it off with water but figured I’d ask in case someone has a better idea or otherwise thinks that’s not a good plan.