If you’re looking at getting into more surfcasting I’d invest in a decent 13 or 14 foot rod. 25 or 30lb mainline is a good start. Usually I have a snap swivel clip on the end of my mainline that I can connect pre made traces to meaning I can change them depending on what I’m fishing for. Traces should be made up with at least 50lb mono but I prefer something like 80 or 100lb just to make them last a bit longer and stand up to abrasion.
Here’s a topic that shows an example of a trace