Yes, I realised bale silage wasn't an option for you, FW. There was a chap using a converted regular small baler to wrap small bales in Devon to sell to horsey folk - he lived off the proceeds!
The only thoughts I had about your crop that's gone over were (a) have it made as big bale silage and sell it. At least the profit would make a contribution to the hay or straw you would need to buy in, and (b) BH talks about them making silage in bags, like big strong dustbin bags, years ago. I don't know any more about it than that but can ask, if required.
And I agree that it's not at all as easy using hay off a big round bale as using small bales, or even big slices off a Heston or mini-Heston (big square) bale. If you've got the room, then standing it upright and walking around and around unwinding is the best way, and even then it's a palaver. But frankly it's easier and less 'orrid than using stinky staining silage