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Installing Marlin is a piece of cake on that board. Just take care not too select all options in Marlin because the stock mainboard cpu has not enough space for a large firmware file. It will corrupt the bootloader if you exceed +- 125000bytes.
For connecting a BL touch, you will need to cut one of the wires of the stock LCD or to solder a wire direct on the mainboard. At least, this worked for me. This link helps: https://www.youtube.com/watch?v=6aofhlAooUE