RE: GP Super Stearman Gas vs. Nitro in cold climates?
Since you opened the door on the DLE 30 that is exactly the engine I would recommend. I have one (rear carb version) and it is a little powerhouse. I also have a Zenoah G26 but mine has a C&H ignition which doesn't have anywhere near the current draw of the stock Zenoah ignition.
The DLE 30 would be sweet on the Stearman.
WCB