I like the idea of letting a shop do the first, for the drilling that I still can't bring myself to do...
I wound up buying a 5 gallon bucket of FF off Amazon. I figured I'd use it eventually. Bought their fancy sprayer too. Buy once, cry once, that sort of thing. Only thing I have to figure out is how to get FF out of the bucket and into the sprayer--I've been using a paint stirrer and it does not work well. Found some sort of bucket transfer pump to try out this year.
I bought one of those paper bunny suits that painters can wear, and use that when crawling under to spray.
FWIW, it will wash off pretty quick in high wash areas, like wheel wells.