It's getting really hard to find any decent-sized twin kits or ARFs these days. I have a similar plan to yours- I have an ESM BF-110 that I want to get going so I bought a kit-bashed twin Goldberg Tiger II. Got it from a guy here on RCU. He had mounted two nacelles on the wing and powered it with Magnum .32s. Flies really well! I think you'll just have to watch for a sport twin to come along.