Digital incidence meter on a cub?

Please.

To the OP, I think making sure your CG is a little more nose heavy will likely help. You are doing the right thing by going for help.

As you are new to the hobby, you haven't really got a feel for what "tail heavy" vs "nose heavy" will feel like on the ground. 25% MAC is usually a very safe place for most airplanes.

The Piper Cub is a proven airframe and should fly fine. Even your "no name" Chinese ARF. Make sure you pick a nice calm day for your first flights. You'll do fine!