1-You need to know the size, first, which is very likely 700c, though the rim may say 622 on it.
2-There are tons of tubular tires (or sew-ups, if you wish) out there. Not really for novices, but fun.
3-Welcome to the forum. If you're not sure what tubulars are, you may want to pass on this set.
4-Doesn't mean they aren't nice, but based on your description, may well need a good truing/tensioning.