Many thanks curious aardvark for the detailed reply! You raise some very important points that help me a lot with my decision.

I presume that even if i use variable layer size the FDM is going to be extremely slower than the DLP (ie 200 microns for interior layers and 50 microns for visible exterior ones). Right?

Based on what i understand and your valuable input i am better off starting with a D7 dlp and use the remaining budget for an FDM using it for 100-200 micron framework for larger models.