Well brakes are a good thing to have lol.
Luckily my car came with gsr disk conversions already.
Rust is a mean thing to fix, on mine i just cut out all the cancerous area and formed a new qp out of metal.
But that's a lot of work =/
and I admire how devoted you are to get it done!
it's sweet that you're lowering it before you mod the engine,
you'll enjoy the stability in turns more than power.
You've got a pretty good foundation so good luck with everything and keep me updated
I'm gonna go dream of driving talk to you later bro