Print with plenty of fan for the overhang. I use 100% after layer 1 PLA works fine Don't print too quickly Use layer time limit for the top layers to slow these down. Layer thickness I would suggest as 0.1 or possibly 0.2 with a 0.4 or 0.6 mm nozzle. To eliminate any warp, I pause the print about 1 mm height and run a bead of diluted pva glue round the perimeter. Even without warping is not bad. That aside printing is pretty straight forwad