I purchased the Rambler 30 as I thought it was a "25" sized plane. I enjoy these most of all. It arrived today and is somewhat larger than I figured. It seems well-made and is beautifully covered. I'm not really interested in speed, so what is a good engine for this. I just got an OS .30FS and was thinking of using that. I'm getting too old for rocket ships. Also, are there any things to watch out for in assembling this kit? Thanks for the help.