You're 26 with a skill-set that's in demand and you've worked for a company that will give you some clout moving forward. So you should be fine in that regard. If you're truly passionate about starting your own business, that'll win out in the long run. Don't pressure yourself into making a decision prematurely. Take your time. Maybe write down all the pros and cons for both staying and leaving. At the end of the day, making a well-informed decision is what I'd like to see anyone do in this situation. Living with regrets can be tough and you owe it to yourself to pursue your dreams.
Those 4 gospels offer varying perspectives and are worth reading as well. They each offer something different and can be helpful when studying. For example, Luke's account offers insight as to what was going on during the time of Christ's birth(see Chapter 2, the decree from Caesar Augustus) while Matthew starts off with the genealogy of Christ. So I believe that reading cover to cover is worth it.
What's good @dhruvp, I see that we have 6 months in total to complete the course. Does that start from the time of sign up or when we actually start the course? I ask because I'd like to take advantage of the great price but I know my workload won't permit me starting for at least a month.