You are right, they are too big. But when I built her way back then there wasn't much to choose of on the market, I didn't have a computer and the internet...what's that?
So you get used to the two guys over the years
By the way, there are a lot of things I would change if I'd build her nowadays. Brushless motors, one servo for each aileron...But you can take off the canopy to change the battery, so maybe I will switch to more scale pilots some day.