For the quantity that you're going to do, I would get plugs even if they cost more. It'll take a few days to plant that many. I'd even get an extra bar or two and get a crew together. The key to making that work is going to be quantity. In any situation I would use plugs. No root shock, uniform holes for planting, they conserve their own moisture while you wait for the first rain, no need to dip them in anything etc.
This fall will mark the end of year 2 of our 300 ROD planting. After all of it browns down, I'm going to go do a stem count and see how they fared. Mine were all browsed back in the first year, but they didn't die. They actually bushed out better, and that was what I wanted. Pending the results of that, I may get 300 more this spring and plant largely the same area and a few new ones.
If you don't hate bare root yet, you will after that project. I've used Itasca twice and both times got great stock from them. I would order them now for spring because they go fast, and for good reason. Hopefully the biggest problem you'll have is figuring out how to mow them every two to three years down the road.