I've just realised I'll be spending about £100 on detailing stuff which is much higher than I was intending to. What could I cut out of here to start with and then add at a later date?
Citrus Power, Tardis, Iron X, Gtechniq P1, Black Hole, Lime Prime, Natty's Blue.
Bearing in mind I'll need to get pads as extra buffing towels too.
cheaper and better value for money products can replace citrus power the will have better cleaning abilities. These will of course remove waxes or sealants whereas citrus power won't so depends on when and how often you plan to use it, have a look at autosmart G101, sold in 5l cans.
again tardis can be bought in 5l cans so works out very economical.
I'd imagine your brakes will through off an awful lot of hot dust that sticks to the wheels and paint? iron x will remove this and speed up the horrible job of having to clay, it's not one of my favourite parts.
tar and iron removers and claying won't be used every wash, just when you want to strip off old wax and lay new.
I would use either black hole or lime prime, not really worth doing both IMO. Lime prime will have more cleaning abilities whereas blackhole will fill more swirls. depends what you want from the finish. if you're happy with this leave the P1 polish for the time being as well.
Nattys blue again not used it but suppoesed to be nice and easy to use with a nice finish, but won't last all that long. if you haven't got it already maybe have a look into an easy to use spray sealant like tough coat or werkstatt. EGP again won't last all that long if you don't mind apply fortnightly for it to keep protecting.