metalic orange paint help please

[Duncan]

Hello All
I need some help please, i want to paint my new car and i have not painted a car for some 25 years now so i am a little rusty. i want to use metalic orange but i cant find one to buy. i have found a translucent orange from tamiya that i was going to back with a metalic silver. will this work ,and is it ok to mix paints from diferent manufacturers.