SG is the most difficult sealants to work with.
Autopia has some very nice MF and cotton cloth towels.
I would order the DAS pads, unless you are getting the SFX polishes.
Dont forget a backing plate.
I love the german white and red applicator pad, as well as the blue ones with the grippy handle on them. I dont use the traditional yellow applicator pads anymore for paint.
I will throw in another vote for AIO too.
If you have textured plasitic trim, PB trim restore is quite simply awesome on these areas.
I like to keep some Spray and wipe handy when i am working, and i also use Spray and Gloss after a wash when the paint is almost dry.