if i were you i would take the four biggest branches and bend them at a 90 degree angle until it snaps. This will make everything grow toward the light and create a shorter plant. While i usually do it in the veg state, i do it sometimes in flower when i run out of height(the same problem your having. ), just dont do it too late into flower. It stresses the the plant and can reduce yield and qaulity. If i were in your situation id'e bend and supercrop.