Possoa came out with a monoflap and I am tall and it fits me great!
I'd be weary of changeable gullets. I've heard they can make your horse's back sore. I'd have a saddle fitter come out and express you want room for growth and in the meantime, use a shimmable pad
I have tried the Equipe in a dressage saddle and I found it was great and have heard good things about them. Thank you Annamaria
Equipe saddles are the best ones in my opinion. They are comfortable both for horse and rider, very lightweight and you can choose the model you prefers