Hmmmm, might be. But niether alot or allot are a lot!
Theres no such thing as a balanced 1/4 inch jack. They HAVE to be XLR - reason being that with a normal jack you have a signal and a ground, two contacts; with balanced you have to carry a voltage for the +10db, and you need the 3rd contact of XLR to do that. It doesnt sound any different or have any magical powers or anything: its for maintaining a good signal to noise ratio over really long cable runs.
Ist cable can have either stuck on the end, or both, one on each end, and depending what youre running your line out from and to you might need jack to jack, xlr to xlr, xlr to jack or jack to xlr. Cant say till you know what youre lining to, but its almost certainly gonna be instrument cable in there.
You cant use inst cable for speaker cable. Thats about the only rule you absolutely need to observe. Inst cable is gonna be what you use 90% of the time. (You could use speaker cable for inst cable, but I cant say what it would sound like).