Ideal front and rear suspension setup

[boxhead]

If you where building a Cobra purely for circuit racing with the occasional drag weekend thrown in, what design would you use?

Front end I guess idealy would be uneven length upper and lower control arms, with front and rear upper and lower rose joint inner control arm mounts, U shapped arms (so no caster bar is required)?
Is there a site somewhere that allows you to play with designs so you can see what camber/caster changes occure with suspension travel?

For rear end, would IRS be best or a watts link type setup on a solid axle?

Thanks for any links or ideas.