No dance floor? Grass? Diy?

We are having our wedding at a barn venue in our area. We’ve decided to have the dinner inside the barn and the dancing outside (it’s not big enough for both) we only have 40 guests. I am stressing over what to do about our dance floor... it’s $300 to rent one for 4 hours (that’s the cheapest, we’ve looked around!!!) and I really don’t want to spend that on a dance floor. So now I am thinking...

A- (the original plan that I am now doubting) the dance area is a grassy small field-ish area. The idea is that we are putting piles in the ground in a rectangle shape and stringing lights across the whole thing. Then surrounding the outer edges with hay bails (covered) for seating and a few cocktail tables. The DJ area is right off of this “dance floor.” Is dancing on the grass going to be an issue? To me, as long as the area is defined and shaped etc people should dance & I know there’s plenty invited who would like to dance. We are also offering the flip flop thing for girls to take their heels off. Is this crazy??

B- switch to eating outside and dancing inside?? The layout I feel would kinda be weird to switch but.

C- DIY a pallet dance floor. I think we could easily for wayyyy cheaper I just have no idea where we would put all the supplies afterward!!!!

D- suck it up and fork over the extra $300

in my “vision” the dance floor outlined with the lights and hay bails looks good but I’m afraid people won’t want to dance on the grass. But at the same time my families are crazy party people so I don’t know what to do!!!