Another brakes question

[Willo]

Right this summer I'm planning on overhauling the brakes on the estate I mean the copper brake pipes and flexi hoses and possibly the master cylinder aswell as the discs shoes and pads possibly change the callipers my questions are as follows I have 14 inch steel wheels but want to upgrade to clones when I have the funds right now for the questions

I want to either replace or upgrade the discs as I have no idea what size they are so

1) What size are my discs
2) what is the best upgrade for these
3) am I better to leave mynater cylinder as is or upgrade if upgrade then to what

I will most likely be making my copper brake pipes myself so for the flexis am I better getting new standard ones or is there a better option

Thanks guys