Hey, personally I wouldn't bother with muslins, I used fuzzi bunz (S and XS) blueberry OS and bumgenius from birth, I also has some 40cm bamboo squares, and swaddlebees NB OV (though these are expensive for how long they last, I got mine preloved, and would be annoyed if I'd paid full price for them) Summer is only 6 weeks old and I've already moved on to prettier nappies, she only uses blueberries, WN OS, and swaddlebees now, the bumgenius are saved for night time! Birth to potty nappies are a good way to go if you can cope with the bulk when they're tiny, I used bumbles, bamboo beehinds, and WN OS on both y 38lb toddler and 8lb baby!
OH and my hospital are pushing cloth nappies, so they provide them for your stay and wash them so I'm not much help there, if you OH will take them home and wash them then go 4 it!!
Shameless plug, I have lots of things in the for sale sect, inc fuzzis, bumbles, NB swaddlebees, and bamboo beehinds!