Best of luck with whatever method you choose! I also have a ton of bulbs to plant - but only because I dug them up in the first place. If it wasn't moist at the moment, the ground where they are/were is probably hard as a rock. Even soft and moist, I had to jump on the shovel to get it deep enough to pry up chunks of bulbs. Hey, nobody ever asked yet, what kind of bulbs do you have?
I now have a ton of Lycoris radiata that won't fit in existing bed areas. Some help digging is in order!