M.M.
I would suggest that you will NOT get the ROI you're looking for. In the end, it will probably cost you more.
You do the update, and you're paying sales tax, installation services, etc ...for everything you put in there. None of which you're going to get as part of your sell price. Anyone doing their homework would consider the cost of the appliances/countertop, and that's it. So it's cost you tax and service to put something in that you don't get back. Not a huge $$$, but, money lost, nonetheless.
You could offer it as a rebate, if you have people that are interested, but on the fence. That might sweeten the pot. But unless it's in really poor condition, don't throw your money away.