I don't think growing food in space is all that important, as long as you can grow it on Mars. You can pack supplies for 80 days, especially if you have an effective water re-usage system like the one on the ISS.

Once on Mars, we could probably use something like this:

https://uanews.arizona.edu/story/the-martian-food-growing-sy...

For producing crops and oxygen, and maybe even supplies for a return trip.