You will be VERY hard pressed to find a job paying $45k, whether part 135/part 91 corporate or part 121.

As for available side jobs... If you are at a regional, realize that they most likely cannot include other flying jobs due to company restrictions. Other than that, you can do anything you like. Consider working part time in your factory or the field you are already in.

I have found, however, that is very hard to work a part time job if that job requires any kind of schedule. As a new hire FO, even as a senior FO, your schedule will not be as consistent as an employer will like. Therefore, the best part time jobs are the ones where you set your own hours. For example: freelance tax help, work from home telemarketing etc, landscaping, painting...

I've seen regional pilots own businesses on the side. The bottom line is that you have to able to set your own hours. I've been turned down from volunteering positions because I couldn't commit to Tuesdays at 4pm.

Good luck!