I think PEI has it pretty much down. The comments by everyone so far are also true that it's hard to give advice on paint you haven't seen and believe me from all the e-mails and calls I get, besides all the posts I've read in many forums, there is no one right way.
For me I usually like to use polishing pads (white) for most polishes...I start and spread them at 1-3 and the work them at 5.5-6. If I know the swirls or scratches are pretty deep and very obvious in all lighting situations, then I'd go with the Orange pad with the SSR2.5 from the very start.
SSR1 can also be used with a Finishing Pad, I think gray in your collection, even though I thought LC finishing pads were Black and BLue

, this will bring a high gloss to the finish. PwC can also be used with either the white or gray pad depending on what you are trying to accomplish with the product. Same speeds apply as above. EX should be applied with only a finishing pad and I prefer never to go above 3..1-2 is best as you are only trying to spread it evenly and thin. Never have used a PC with Natty's but I believe somewhere mtwedt has a thread or post how she removes the Natty's from the jar and is able to apply it to a finishing pad.
Hope this helped...also see the thread I wrote on using SSR2.5
http://www.detailcity.com/forums/showthread.php?t=14287