Depends on how much welding you guys need to do to say whether or not it's worth it. Stick is the cheapest obviously. TIG will need the torch, pedal, bottles and regulators. MIG will need a stand alone feeder like this:
https://www.millerwelds.com/equipment/welders/advanced-mig/continuum-wire-feeder-m30065
The machine you have is a power supply, and very versatile but still needs all the peripherals to be useful.
This is a cheaper feeder option I think...
https://www.millerwelds.com/accessories/wire-feeders/20-series-wire-feeder-m00300
then TIG torch and pedal and if you're doing a fair bit of Aluminum or high amp TIG a torch cooler set-up.
If you guys are looking to stop subbing out welding repairs on the farm I'd go with the 22A feeder, dual shield flux core wire in .045" for general purpose stuff. It will need a straight CO2 gas shield.