Hi,
I would say go for commercial for the following reasons:
- much more jobs available on the 737 in case of unemployment
- in general you fly more in commercial than in business
- more stable roster
Unless it is Netjets I would go for the 737. Business aviation is much more fun flyingwise but it is not stable at all. There are so many different kind of business jets and it is hard to find a job on that particular jet if you would lose your job.
Go to an airline, build some hours, maybe become a captain. If you have enough of the airline industry and enough money in case of unemployment, then I suggest to go to business aviation as a captain. Find a job with equal home/work-time and payed typerating and enjoy the diversity in flying in business aviation.
Good luck!