looking for 60% rayon, 35% nylon, 5% spandex type of fabric, preferably white. does anyone know if they sell it here?

you probably won't find a label with percentages, but they have a range of thin poly blends there.

Not sure...They have 2 stores close by with same name.. Best you go and stop stores. And ask cause they have many and many bolts..

I've seen a little bit of the good lycra

Yes they sell many type of spandex and nylon and ryon in many. colors