Can't help you with the smoke other than to tell you that you might get a smoke pump and pipe the oil into the exhaust header. I'm not sure how it will affect the performance since it may cause the back pressure in the exhaust to increase.

As for the remote glow, I have 5 twin setups with the glow plugs wired in parallel connected to one remote glow connection. I use a very large setup of 4 2400mAH Nicads also wired in parallel to drive both glow plugs and have never had problems getting both cylinders to fire. There are some on-board glow drivers for twins. I installed one in a plane for a friend. He had a Saito 270 twin and says it works well. I think it was a McDaniel multi-cylinder glow driver.
A little searching and I found one on Horizon website: http://www.horizonhobby.com/Shop/ByC...?ProdID=MCD472

Good luck,
George