Wherever you do it, I hope you get a lot out of your training and your flying skills improve as a result.
Tail wheel is more demanding and it doesn't take much to turn a nice landing into a slow crash.
One TW is not going to be the same as another and a Decathlon is one of the easiest...few vices and pretty good visibility over the nose. Pacers are pretty closely coupled and can get away when you least expect. Austers are something else again and are very susceptible to cross-winds...at least you won't stand one on its nose by overbraking!
Learn to fly a curved approach. Practice your side slipping and think seriously about some basic aeros, especially stalls and spins.
Have a great time.
Kaz