#2
yepp pretty much, it would be very odd if a set didn't fit.
my stuff:
schecter c-1+
ibanez rg3exfm1
schecter avenger 7-string with emgs
esp/ltd mh-50
peavey 6505+ 112 combo
tc electronic polytune
way huge green rhino
mxr micro flange
mxr smart gate
dunlop crybaby
#3
they will, only watch out for active hb's, i dont know if the battery fits in the tight les paul cavity.
also mini humbuckers wont -_-