Okay Merlin,
I'm about to tackle this very same combo you mentioned above on my HD truck. Last year I did D300 (red MF pad), BFWD AFPP (black MF pad), with BFWD MS (hand) ("wet ice over sun" combo). The truck is garage kept, so it's still feeling slick, but I'm ready to recharge it. Plus a year of drag racing, there's some swirls and stuff back in it from wiping itdown, cleaning burnout goo off the rear 1/4 panels, etc.
Now I haven't washed my truck in 2-3 years. I always keep it clean enough that it doesn't get to that point. It barely got 350 miles on it last year, this year is probably about the same. It goes out of the garage for a short drive or a track event, then back in the garage, and QD'ed before/after each time. At most after a track event with more rubber/dust flung around it gets waterless wash.
What would you recommend as my starting point? Strip off the BF that may be remaining on the paint? I prefer not to dawn wash so can I use Eraser or the Arnolds Speedy Prep towel? Or can I just start as-is and just start with D300 GPP (red MF), GPP (blue LC), BFWD AFPP (black LC), BFWD MS (hand)? Looking forward to hearing your recommended recipe!