14.2ish Bomb proof happy hacker for a mother and novice son share.

Looking for a kind and bombproof horse. Confidence giver. Will need to enjoy hacking alone and in company. Good in open spaces, traffic, stable, no vices. Suitable for novice son to learn on in school, stepping up from pony. Shared riders mother, 5’11, 10.5 stone and novice son age 12. Any breed considered that will suit both riders according to temperament size and build. Would be on a yard. Loving home awaits.