Rightly or wrongly, a 4-year degree is a virtual prerequisite to almost any decent flying job you'll ever come across. True, there are some guys who don't have a Bachelor's degree who nevertheless made it into the majors, but if you ask them, most will admit that they benefited from other factors (exceptional experience, military service, connections within the company, etc.) in their search for employment. Most of them know their success is something of an anomoly, and will implore you to finish your education at whatever cost.
My advice would be to take the jet job, and start building turbine time and a dependable work record. But as soon as you've settled in to your new position, start taking classes online. Embry-Riddle would be an excellent school for doing that, and layovers would be an excellent time for doing it.
BTW - Don't regard the last 2 years of college as a mere "formality," especially if you're majoring in Aviation. The skills you learn will come in useful throughout your career. Correcting the grammar and punctuation in your Captain's trip reports, for example...
Your whole future lies ahead of you. Trust me, it will be far easier to finish the degree now, than to explain umpteen-thousand times over the next 40+ years why you don't have one.