If you want to go into an organic synthesis program later on and look for a job in the meantime, the best kind of experience is in organic synthesis – that is running synthetic experiments in the lab; you can’t become a professional pilot without spending hundreds hours in the cockpit. Find a research technician job with a pharma company or custom synthesis lab. Or in a research group at academic institute/university – although industry typically pays more. Try to get your name onto some of their published stuff, journal articles and patents – it will look good on your resume. You will need at least some publications and very good personal references if you want to go to grad school in your late 30s. (It will be more difficult but a man ought to take care of his family first).