Most of the Cox 049 airplanes do fly like bricks. Especially the "scale" ones. And the Cox 049 is a great little engine, but the Cox airplanes that are usually strapped on the back really are overloads for it.

The engine also is not really a beginner's engine. They're way too hard for the average beginner to start by himself and not easy to adjust. Too sensitive. I've got experienced flying buddies who can't get them to run.

It's good advice to look around for a trainer.