what would be the best chems to use to clean using the following method?

1. of course vacuum first
2. use 175 rotary with solution tank mounted on it with carpet brush
3. use mytee M5 extractor

so what would you use in the 175 and what would you use in the extractor

choices for 175 i guess would be
1. a carpet shampoo
2. some type of cleaning detergent
3. a pre spray chem or traffice lane cleaner

choices for extractor
1. just hot water (no chems)
2. a fiber rinse
3. and acid rinse
4. any emulsifier
5. ??????

any feed back would be helpful just to throw something else into the mix i also have a rotovac 360i with both the stanard head that comes with it and also the carpet brush head