2) Land a high-paying, low-stress, part-time gig that can be parlayed into a career post running.
Dude there is no such job! Or like runners of the past you can work your ass off at a job, run your ass off in training and live within your means. It's worked before and it can work again. We worked in construction and I hired sub 28:30 10K guys and sub 2:18 marathoners. We would all run before work and run after work. Hell sometimes we would run at lunch. It can be done.