I was given a 7 year old arabian to work with back in october, he had been shown class "A" halter and done very well. But....... that was the extent of his training.
And those halter horses are bred to be HOT let me tell you

this boy was no exception
Arabians are really tuned in to their handlers and they will bring out the best and worst in you. Haha count on that
If you don't have a whole lot of experience workin with horses that are green or just not broke... send him to a reputable trainer or have one come out and work with you guys.
I mean that's what they are there for
No shame EVER came from working with a trainer and you'll probably progress a ton faster than you would on your own.
I love my trainer she comes out and works with me each week, you learn so much valuable information.
Psssssshhh all that stuff about him being too old, he'll get it. Just be consistent, patient, kind, but FIRM when you've gotta be
Congrats on your boy! Have fun with him!