u/Comfortable-Poem-941

I’m preparing to paint a Sons of the Phoenix Space Marine army and would like some feedback on my paint selection before I start.

These are the paints I currently have:
Vallejo Grey Primer
Corax White
Apothecary White
Wraithbone
Phoenician Purple
Genestealer Purple
Iyanden Yellow
Talassar Blue
Leviadon Blue
Doomfire Magenta

I also have separate gold and silver metallic paints at home. I have not yet chosen a grey paint for the flexible armour joints and other dark mechanical areas.

My current plan is:
Vallejo Grey Primer as the primer
Corax White for the main armour
Apothecary White for shading and definition on the white armour
Phoenician Purple for the shoulder pads
Genestealer Purple for purple highlights
Iyanden Yellow for the eye lenses
Talassar Blue and Leviadon Blue for power swords and energy effects
Doomfire Magenta for the Librarian’s psychic effects
Wraithbone for purity seals, parchment, bones and other warm off-white details
Gold and silver for the trim, weapons and metallic details
I want the armour to remain mostly clean white, with purple shoulder pads, gold details and yellow lenses.
Do these colours work well together? Is Corax White suitable over a grey primer, or will it require too many coats? Would Apothecary White work as an all-over shade, or should I apply it only into the recesses?
Are any of these paints unnecessary or redundant for this colour scheme?