Alistair gave you the most sound advice you could possibly hope for on the subject!

If you cant take the odd negative comment (I posted some too as well as the ultima suggestion) then discussion forums arent the place for you IMHO!

If you are serious about this idea, Ali is exactly the sort of person you want to be able to bounce ideas off he is VERY clued up on suspension and chassis design in particular, I would take his advice over just about anyone else on this forum!