Because you have an OS .40LA I would suggest you buy a slightly bigger aircraft than the Flite Streak. The LA is a rather good engine for C/L flying straight out of the box. I would suggest an aircraft like this: [link=http://www.horizonhobby.com/Products/Default.aspx?ProdID=HAN0100]Hangar PT-19[/link].

Edit: Posted the wrong link