I think it all depends on where you want to begin your career. If you do your fieldwork near the place you want to set up shop, you’ll make connections with doctors, become familiar with the regions clientelle, get to know the possible OTA pool and tech pool situation to know how well of techs you’re dealing with. You could possibly set up connections with the local university. There’s a lot of advantages to doing your fieldwork in the location where you plan to work.