If I may chime in, wrapped hay is just plain old more effiecient from a time standpoint. Like Jo said you can just about get your hay up on your schedule, not someone else's.
When we bought our JD567 the "wet kit" was an extra $300. That was a no-brainer even though I had never wrapped any hay before. Believe me when I say, pay the extra money for a wet kit if offered. My buddy wanted to wrap some wheat to wean his calves on, after cleaning his 566 "no kit" out about 20 times, I went and got mine for him to use. Never messed up after that. Mine has wadded up a time or two but that was because my scraper bar was out of adjustment.
As for inoculant I'll say, it can't hurt but I've never tried it. I have thought about mounting one of my atv sprayers on the baler, thats basically all they are, but I would need the right nozzle and timing.
Plastic is burdensome but managable. Ours is an Anderson also and I think this is better than the single wrap jobs, they use way less plastic. Get the good plastic too, and pile it on. We get about 60 bales for every 2 rolls of plastic.
I don't know if this is right but someone told me all that plastic is just basically replacing the cows first stomach. Meaning, your not adding anything to the crop to make it better, just making it more digestable.
If you are gonna run haybeans make sure you have some sort of cereal grain with it. Soybeans are low in sugar and need the sugar in the cereal grain to help it ferment properly. I don't know if inoculant would solve this or not.
Haylage works great for us!
Sizmic