Welcome to APUG ! Bronica and A1 are excellent cameras , I never could afford to a Bronica but I think I read about them at an British Photography Magazine and I just loved it. If I am not wrong , Nikon makes its lenses , do you know that ? I dont know , you could visit the gallery but there are excellent stuff. Invest 5 minutes and register to Large Format Photography Forum , there are 2 times bigger images free to view and really they break the speed barrier. There are used equipment fairs at there and you could buy your tanks , spirals , enlarger etc.
Do you have a specific question ? Search it in forum tool bar and dont hesitate to ask. There are good police and bad police , dont listen or answer the ignorants and put to the ignore list. Good luck.