I need some help on choosing an engine for a seagull ultimate 90. I have a OS120 surpass but I dont know if it will suffice. I would like to put it on gas but I dont want it to fly like a brick either. If I go gas I will use a crrc26. If I go glow I would like a 4s but may opt for a 2s. Please give me some imput. Prefer real life experience. I would like it to have good vertical climb. I dont do extream 3d but would like to learn.