Welcome to the Z world!!!
You will love this car!!
for Clear Bra, yes, do it ASAP you get the car...
but don't get the dealer to do it cos they just sub-contract to someone else to do it thus it's better to do it directly with the shop to save time, money and in case, after sales service.
i will suggest full bumper, full hood, partial fender, A-pillar and mirror.
If possible, the side skirt.
as for cleaning products, yes, MeGuiar's has the best products out there, Gold Class Wash and the Gold Class Liquid Wax are the best twins to go.
As for tires, go with Simoniz Long Life Tire Shine Kit, it's the best kit I've ever used on tires, (I just look it up and it's actually on sale at Canadian Tire right now, $10)