Need some help, i am trying to decided how to go about it.

I was initially thinking just painting it all with Black Hammerite Smooth as it was a easier option.

But looking thru the threads it would prob look better painted in Mallard Green.

Now as i know sod all about painting using a air gun ( i do have a compressor and gun, but never used it ..lol )

What would i need for the job ??? and how much does paint cost ??

Ta.....