Wooooooooo thats quite a tight budget my friend the machine with backing plates and pads are around the £120 mark.

I will pm you a list of products buddy,try not to faint lol

EDIT: i also forgot to say.....foam can be achieved through a snow foam lance and pressure,or a gilmour foamaster which simply attaches to your hose,do you have a good pressure on the hose?if so then it will provide you with a good foam