Agricultural Wheelchair / parts / mentors

Greetings,

I find myself to be confined to a wheelchair for the next 6 months, and trying to manage ven a very reduced spring grow-out of poultry is giving me some challenges.

Are there any experienced wheelchair based farmers that can offer some guidance?

Might anyone have an old  18x18 up to 20x20 framed wheelchair already adapted for agricultural use: 

large knobby pneumatic rear wheels:  https://livingspinal.com/products/sumo-bombers-for-beach-and-snow-pair…

Or a front freewheel adapter, ( https://tadpoleadaptive.com/products/folding-wheelchair-freewheel-kit?variant=5884414132254 )

Limited cash but I have some fantastic breeding trios of Standard Bred Chantecler poultry, ready for sale/barter!