I recently passed 25 and also quit my day job to work on a startup, so had to enlist my own heath coverage. I did it as an individual and used Blue Cross Blue Shield. I dont know if its the best available in terms of cost, but considering all of the factors it seemed like the best choice at the time.

Unfortunately, individual health insurance is expensive. So it will definitely increase your burn rate. Regardless, I dont advise skipping on health insurance. Even if you are not a particularly active person, you just never know what can happen. ~$100 a month is not worth risking your life over.