At first I tried the steam -> EU conversion but it was more trouble than it's worth. You have to pipe steam into the steam consumer on all five faces (the sixth face is connected to the energy bridge) and do some liquidduct combination magic to max out steam input to the energy bridge. At 720 mb/t of steam, the math works out to be about 350 EU/t. In testing on the ultimate server I'm on, a single 36 HP steam boiler was able to power a IC2 HV producer ok if you could get around the piping.
So I scrapped that completely and went with MJ -> EU. It works the same but now I can use all my MJ bleed-off into feeding the energy bridge. This did mean that I had to shuffle my magma crucibles/thermals around a bit. Now that I found MineFactory Reloaded's lava fabricator, I'm testing to see if it's worth switch to (20k MJ per Bucket of Lava from MFR whereas Cobble->M.Crucible is 24k MJ BUT MFR only consumes 10 MJ/t compared to the 30 MJ/t for a M.Crucible).