I would recomend laying it on its side while printing, because then the layers go with the bending load and not orthogonal to it, the downside is you have to clean one side of the Part from the Support, but its way more robust that way.

Especially at the relatively thin point.

4-5 walls

5-6 top/bottomlayers

30% infill

You will need:

2x M5 Nuts ISO 4043

2x M5x35 countersunk head screws DIN 7991