Congrats on your 26 acres
Wide open spaces is what I'm talking about!
To a point Guineas are
somewhat self sufficient...
if you you only want them around for a little while. Point blank... if you're putting them out on 26 acres that's not inhabited, they won't last long.
I coop/pen my birds at night, because I value their lives... I've raised them all from keets or even from eggs that I've incubated and hatched. I prefer not to offer free meals to the predators at
my expense (or the birds' expense). Once a predator has a taste of a free meal they will continue to return until the cafeteria closes.
I also provide adequate nutrition for them year round, whether they want it or not and whether they find what they need while out free ranging or not, it's there. If they have to roam far for the nutrition that they need, they won't stick around (and again, the predators get free meals).
A new flock of Guineas needs supervision and protection from predators AND the elements or they will become free meals for the predators in a matter of days (or nights/early mornings actually).
You're not putting our chickens out there alone... why do that to Guineas?