Check with your local Ag agent if you are serious about it.
You'll need a lot of help with the planting, harvesting and bailing. This is all based on a fifty acre planting. Starting the seeds in a home made seed bed is a one man operation and will cost less than $200. to get enough seedlings to plant 50 acres. Figure another $4500.00 for misc. stuff (spears, racks, pesticides, herbicides, bailing equipment etc.)
Right now here in Lancaster Pa the farmers are getting $2.00 a pound for Penlan 39, cigar, pipe and chaw. About $3.00 a pound for Maryland 609 cigarette tobacco. You'll need about 8 sq ft per plant.