#1
my new epiphone G400 has a little buzz still on the low e and a strings even though they are pretty high any suggestions or is a bit of buzz ok
#2
A bit of buzz is ok usually. Not as noticeable on an electric guitar as it is for an acoustic. Mine has slight buzz when i play a little hard on my low E around the 4th fret. You could adjust the bridge and all that maybe or it might need a truss rod adjustment.

best advice for neck adjustment and all that, take it to a luthier to do it.