If you're doing this for professional reasons, then crunch the numbers and decide which is the better use of your available resources. Do you need something that one system offers, but not the other? What is your kit likely to be in two years, and how much will that set you back? (Bronicas can be cheaper out of the gate with a basic system, but some add-ons can be outrageously expensive.) Are you willing to stick with used equipment for your livelihood? Will the cachet of using Hasselblad help your business? You get the idea...

On the other hand, if you're doing this for the love of photography, then follow your heart. You'll be happiest that way, and more likely to get out there shooting with a camera you have more than a simple intellectual attachment with. (This is what I've done in every format from 35mm to 8x10, and it's worked very well for me.)