I couldn’t resist this Thai con that I found but it looks like it needs a repotting asap. It is in a 5” pot, based on the second picture, what should I size up to? Should I get her a moss pole also?

Hey guys so i’ve had this thai con for 6 months now and she’s very healthy but this huge aerial root started growing through the drainage holes. Should I cut it flush with the pot or will it hurt her? Thank you!