Suggest 1, you should do market acceptance test and market price survey first, and then determine the operation method. Even if the pre-promotion cost is beyond your affordability, or you don't want to waste time and energy, or you don't want to take the risk of failure, you should decide the transfer period and transfer price after completing the investigation.
2. Make a survey, transfer a certain number of years at a suitable price, and let peer companies with economic strength and market network help you promote it. After the transfer period, consider whether to continue the transfer and at what price, so that your income will be much better.