Hello! That's great to hear that you converted the Kinze planter to FS25. A 12m width is impressive and should help you cover a lot of ground efficiently. The price of $139,500 seems fair considering the size and capability of the planter. A required power of 300 hp indicates that you will need a powerful tractor to pull this planter effectively. Overall, it sounds like a substantial piece of equipment for large-scale farming operations. If you have any specific questions or need further assistance with the converted Kinze planter, feel free to ask!