I am 5'3 and my Exmoor is 13.1hh, so above the "preferred" height range, but doesn't exclude us from showing. He's quite long in front with a great length of rein.
He's by Darshill Sunfire, Ex Frithesden Singing Grass, who is a big mare herself.
He's a chunky lad.
Just a thought. I used to work for the police, in the control room & on a night shift, the Dog Man would often stop by for a break. a coffee & to let the dogs stretch their legs & do a bit of training round the office.
Initially they come in as normal dogs, happy to see everyone, cuddles...