Personally I'd go for the instructor route or any other paying job at an airport.
Flight instruction will improve your skills and your cockpit communication skills. Every hour as an instructor is "multi-crew".
You'll greatly benefit in learning to deal with difficult personalities.
Best of all it will greatly increase your total time.You'll need it.
Too many people with 300hrs. hanging around for the few jobs available.
And you'll never know who you'll run into at the airport, networking is more important than you think.Remember even
PPL students can recommend you for a job somewhere.
Good luck.