So our property has finally been put into a proposed unit.  The hearing for the Withey NE and NW units are scheduled with the Ohio DNR in December.  Based on other units in the area, if the schedule is similar, royalty checks should start to come in within the next 12-18 months.  What should I being doing to prepare?  Are there steps that I can take to reduce our tax burden?  Also, I have heard many people on this site state that you should never sell your mineral interest.  However, I have received what I consider a good offer of $17,000 per acre on a 17% no deduction lease.  If we were to sell we would only sell 25%-50%.  Should I get an oil/gas appraisal for the property and what should I expect to get from that as a result?  A lot of questions, and there are probably some important ones that I haven't even considered.  Any input/advice would be appreciated.  Thanks.