I don't know what equipment you have or the type/condition of your field, this info is what I've picked up over years of planting Sorghum(milo) for cash crop, food plots and local hunting preserves
-Equipment.. check with your local soil conservation district. They might have drills, sprayers, tractors, drivers you can hire or rent.
Drill works best for food plots. Can get 7 1/2 or 15 inch rows. Get canopy closure faster, (ground shaded, less weed emergence. 7 1/2", can get a little tangle footed. 30" (planter) rows wider, less cover. 15" good compromise.
Planter will work, you need sorghum cups/plates to plant with.
-Chemicals.. roundup for burndown, Dual, atrazine for pre-emergence weed control. Mix can be put on prior to or right after planting (day or two).
The last two are restricted use , need an applicators license, or hire it done. Round up alone, burn down 3 weeks prior, right after planting. Want field clean as possible.
-Planting rate.. I shoot for 60-65,000 live plants per acre, planting 70-75,000 seeds, with 85% germination rate, around 5lbs. Look at seed tag to see how many seeds per pound and germination rate. to get pounds to plant. Higher rates given by seed companies are for maximum grain, production, no tillers, quick dry down. Will have thinner stalks. Lower rate will have thicker stalks, more tillers (more cover) and stand up better in winter. Avoid, if possible free bags of milo with tags removed. Usually left over stuff from Texas. Won't mature before freezing, don't know what your getting.
Soil temp 60-65 degrees, 1 -1 1/2in deep.
Good Luck!