You better not install the driver from the Nvidia website, most of the people who do this complain for problems later. Instedad you can try the appCenter first, use the "Installed" tab on top and wait for a while. A list of Nvidia drivers should appear there. I do not know about the macs, but my laptop works well with the latest version of the driver, you ...
According to the table linked above your MBP appears to have 64 bit HW and EFI but are forced into 32 bit EFI mode in firmware. IIRC the boot images provided above should work with that machine.
FWIW, I've used them to install elementary in the past without issue (old iMac).
Give it a shot - will probably work.