Hello JJNiles, and welcome to the forum! I would personally not suggest a twin for your first airplane, best keep the costs low for a first model. Instead, you could build a plane with the same power pack as the Sea Duck, such as the FT Explorer. Then, when you are ready to move up, you can build the new airframe, and re-use your existing power pack, buy the other motor/ESC, and start building! Good luck with your first build and flight experience, and feel free to ask your questions here. And again, Welcome!