Are you getting a 'present value' for the property, or a 'potential' value?
You really need an appraisal, 'as it sits', (if it is vacant, it is gonna appraise very low). Previous income could possibly help you do some projections.
I feel income producing real estate is a good inflation hedge and should be PART of your total portfolio (I use ~ 30% as a RE holding rule for myself)
I vote for taking the best of the options:
1) The property - IF it can provide you with decent PASSIVE income (~7-10% of the capital value annually: passive income = YOU not doing the work / running the business / paying the rent) In this option BE SURE you accurately evaluate the reasonable rents the property could generate. (without significant capital improvements)
2) The payout IF it can better the 7-10% return on property by being invested in another like 'income generating' property (consider tax implications). AND the replacement property would have better equity gain.
3) If you want to run the business, then BE SURE the business can pay the equal rent that an independent business would pay, AND that the rate would not be over market rate for your business. (Hint: hold the property in a separate LLC (preferably a 'flow through' to allow you to take advantage of capital gains benefits), and keep business, property, and personal accounts all segregated)
If the property is truly prime (such as future beneficial zoning, sell, trade, development) then weigh that into the equation. You can't really count on equity growth, but you can position your 'site selection strategy' and buy 'under market', to help get equity growth potential. (This potential equity gain should NOT be used in calculating your return on capital).
For ANY commercial property you really need to get at least a
level 1 environmental report to assure you aren't buying a 'super-fund-cleanup-site'

. If there has been any automotive / equipment repair, fueling, chemical use / storage, dry cleaning... then you want a minimum of a Level 2 environmental study (with ground borings and soil tests). You also want to hold it in LLC ownership as a liability shield.