Yeah, the bale is a big commitment. Any way you can get a flake? Maybe from a horse barn nearby or something? Maybe even asking your hay merchant for a bag of test hay? I know mine often has busted bales that I can take from if I want to.
Mine get the orchard grass as their every day, maintenance hay. The stuff I have been getting lately has few if any seed heads, possibly because it is second cut. The hay itself tends to be longer and leafier than timothy, with few if any stems. The timothy that I have gotten around here is very stemmy, and the buns don’t like it much. I use the oat hay as a treat hay; I give them a handful at bedtime as a bribe to get them back in the pen. They munch up the seed heads right away, and for the most part leave the stems behind. They chew on the stems from time to time, but don’t eat them all. Over the summer I got a bale of wonderful green oat hay, which was kind of like a leafy green timothy hay with oat seed heads. They ate this like crazy, stems, leaves, everything. That was probably a second cutting so the leaves and stems were more tender.