[captainbraindamage]

The low E side should be set a little higher due to the fact the larger diameter strings travel more distance ( vibrate ) when plucked. I would start with the relief first I set mine at about .008, I think .010 to .012 is what is recommended. Then you can set the string height. If you measure to get an approximate setting, measure from the bottom of the strings to the 12th fret. Gibson says 3/64 on high E and 5/64 low E, but if higher is what you like there shouldn't be any problem. I wouldn't go too excessive though. So if you have a difference of 1/32 (3/64 high E and 5/64 low E) at the 12th fret, which is halfway between the nut and saddle, when the strings reach the saddle there will be an even greater distance. You could kind of think of it as a long skinny triangle.
But I would start with the truss rod. I have bought 2 Epis in the last 6 months. Mine was flat as a pancake, no relief at all. My daughters was .016. IMO that should be the first thing to check