hi mate im local to you and have seen the car around. i have got a white sapphire cossy. really if your asking what grade of sand paper and primers to use then i think you might be in a bit deep to start off with. Have you tried LS designs in Sandford/Upton? they are quite reasonable. A friend of mine has his own workshop in New Milton and is one of the best painters i know, maybe if you help him do the prep work he might do a reasonable deal for you. let me know if your interested and i can ask.