Personally I wouldnt use a sponge or a aqua blade.

Better of using a mequiars wash mit and a mequiars drying towel.
As for cloths, get some decent microfiber cloths (mequiars do these).
Pmsl at kitchen roll

You dont really need to put anything on after a wax but you can get some mothers topcoat if you wish, this goes on after athe wax and supposed to make it last longer.

Look here for good advice and tips
www.detailingworld.com

cheers
Benn