wah i propose u save the money give foreman do dun do it yourslef ...... some lines u can go but some lines its dangerous ..... if your can work half way but canot work out the other half way then how u let the foreman do ther other half ? ask the foreman go your house do ar ? ...... actually y u need 4 disc brake ?
my opinion, better send to mech and settle it la... this one not easy job ler.... even if have the tools, u need some necessary skills and experience from the mech...