You dont "need" flaps on the telemaster but they are fun. On landing or takeoff they arent necessary but flaps are a lot of fun when you have a little headwind and you fly the plane at a standstill or backwards.

A plane like a telemaster is a lot of fun bc it gives you a lot of flexibilty. You can easily change engines, add bomb drops, flaps, smoke, use it as a tow plane, trainer, etc etc.

I have a scratch built plane very similar to the telemaster and bc of its flexibility I use it to test engines. The plane will fly on anything from a 40 2 stroke to a 1.20 4 stroke. I just bought my first twin and cant wait to break it in on the plane.