Sprayers - How much paint?

[G-nova]

hi i am going to be spraying my mates chevette inside and out its a saloon so how much paint should i buy? any information is much appreciated:thumb:

[G-nova]

btt

[Lee]

For reference we managed to put 2 good coats on my van including bumpers but excluding interior and roof with 2.5 litres.

Id say youd need at least 3 if you're spraying inside and out.

[WBC]

Depends on what paint your buying too???

[G-nova]

2K ARDEN BLUE is the colour i can get 3 litres for £72
Also im using etch first on bare metal bits or should i just give the full car a coat?