I just purchased and installed two of those 93's. You'll like them! They're extremely nice. Bluebasser is 100% spot on. If you have a jack plate it needs to be on the jack plate or a skid/hole shot plate below it. Mine tossed some mechanical interference from the original mounting location due to my plate. Learning experience... Without a jack plate, you should be good with the standard mounting location in the instructions I would imagine if you choose the transom.
There are benefits from both locations. The console is pretty sweet if you idle and use imaging a lot to scan things. Also, if I'm learning unfamiliar water I'll use the imaging while idling to figure out where it's safe to run and where it isn't. Hillsdale, Smithville etc... have a lot of timber I'd prefer to not slam into . That being said, I'm on my 93 up front quite a bit watching it for depth changes, scanning etc... Tough choice with one unit.
Best of luck with the decision on mounting location. If you have any questions on the install, kick me a private message and I'll do my best.