More 73+ disc conversion questions

I just received a 73+ conversion in the mail yesterday and I'll be going through it this weekend. I want to get everything ready (including suspension kit) so I can just knock it all out at once on my 67 Barracuda. I was wondering what brands of Calipers and Rotors are any good? I'm not looking to spend an arm and a leg but I don't want to go too cheap either. I just need some normal daily driver stopping power without being annoyed by the problems that come with cheap parts. Would it be a better idea to rebuild the original calipers or is it best to go with new ones?

Also I'm going to need to get a prop valve. The car currently has 10" drums all around. Am I going to need to change the brake lines when I put the prop valve in? If so, will I just need to change them from the MC to the valve or will I need to change them out all the way back to the rears? Thanks.