Well, first I'd like to say be careful with those funny chords. You might hurt yourself.

If I were playing with you guys, I would probably start with soloing in Em pentatonic. In particular, I would start on the 7th fret with the fingering that looks like an Em chord:



E |-----7-------10----------------|
B |--------8----10----------------|
G |-----7-----9-------------------|
D |-----7-----9-------------------|
A |-----7-------10----------------|
E |-----7-------10----------------|



I hope this helps out.

Jon