My family has many acres of buffer strips, restored prairie grass fields and CRP acres planted into various native plantings. Several of the early fields are big blue, little blue, Indiangrass, and swtichgrass (note: don't use too much switchgrass, as it is alittle aggressive...and make sure they are native varieties) We tend to leave out the switchgrass in our later plantings. We have used our county grass drill on several fields, had the NRCS drill buffers and then used an old oat seeder to do some others. All in all, the grass drill is the best. You can work the soil like you are going to plant corn, or try it no-till...both work. We have drilled in late spring/early summer. Make sure to kill everything with roundup before drilling. Make sure to mow the weeds for the first few years. We mow several times just to keep weeds down and to give the grass a chance to come up. After establishment, burn every 2 or 3 years.
We get all our seed from Osenbaugh (spelling may be incorrect) out of Lucas, Iowa. They are good people.
Hope this helps...I could ramble on and on about prairie grass. Lemme tell you, it will increase your sightings of all types of animals.