Chris the setting for printing the surfaces is under special modes and is surface mode: both.
One weird thing you need to do for the 1st two layers is create a modifying block. Insert an 'eraser' change the height to 0.4mm and make it as wide as the part your printing than move it to the bottom of the print volume. Change mesh type to modify settings for overlaps then in here you change to 2 bottom layers this makes the flange I was talking about otherwise it fills in the bottom layers incorrectly. I attached a .3mf file so you can see what I mean.
If you'd like I can post the Gcode as well, just need to pull it all together.