My small family is about the hit the trails in search of an arrangement similar to what you described! We are a mom, dad, 3 year old boy (expecting a new baby this winter), and 14 year old dog with a diversity of skills. My partner has many years' experience in trades and labor and most recently has been working in the local food movement, building hoop houses for small farms! We'd love to talk with your family more about the arrangements you have in mind- and see if it would be a mutually good fit!
Looking forward to hearing from you,