Go with the Ghost holster and Ghost mag holders (get 4). Get a real belt (i.e. CRSpeed). Additional keepers are nice.
Get 2 more mags...you'll break one eventually. The other extras you can gas up and let rise to room temp between sets.
With optics (and your p*nis-compensatingly long pistol

)...you'll be shooting Open division. There's only a few guys in that division.... Consider shooting a 5.1 in standard. You'll have more similar-level competition and get a lot of trigger time in. Race guns tend to be continuously under the knife...which is not a good thing just before you go to a match.
Illusion's sear/hammer sets are sweet. I picked up a 4.3 lightened commander set...dropped right in a worked sweet. Splitting hairs, it could use some minor tweaking...but I'll do that later.
The red PDI triggers are nice...Illusion's bound to have one kicking around.
Also ask him re. skater tape covers for your grips. They're great. A bit too "rough" at first...but just perfect after a little use.
Really like the optic mount setup.
Tys