IMC in G for cruise is basically impossible outside of the G->14,500 (or similar) out west.
You have several competing rules:
1) Maintain at least 1,000' above the highest terrain or obstacle within 4 nm either side of your flight path
2) Not exceed 1,200' AGL where you are right this second (overlying E space outside of areas above)
3) Hemispheric rule for altitudes (and those are MSL, not AGL)...the exception for <3,000' AGL is a VFR rule and does not exist in the Class G IMC rules.
If you can thread those 3 needles, you can, technically, fly IMC in G (with an IR and current, etc.) in the 1,200' E, but if you can do that without busting one of those three, I'll tip my cap to you.