Get the Black Hole from here and the SN from Envy Valeting on here with a members discount (Tim might even sell BH too, but I'm not sure - although I personally think Natty's gives a slightly wetter finish, personally.
Do a full wash, decontamination (fallout, tar remover & clay) and spend some time polishing it - level of correction requires would determine what polish. I'd also suggest using both Black Hole a Lime Prime Lite is unnecessary - one or the other really as neither has any cut and both contain cleaners so the first will just be removed by the second anyway.
Isn't lime prime lite a cleaner and black hole a glaze? So the black hole goes on after to hide your blemishes?
Not saying I'm right, just asking.
They do not do the same, lime prime is a cleaner/ cleanser, with the op saying his paint is looking tired I thought it worthwhile to revitalise before the polish/glaze of black hole