I have a 32" Fender Jazz, so I can't comment on the low B aspect.
I really love the bass, but I find it almost a little too compact, I think 33" is the way forward for me
That said, as mentioned earlier, everything is scaled down a bit, I imagine if you kept everything else 'full size', it would be very comfortable.
Also remember that you could always talk to a string manufacturer about custom tension strings (Newtone come to mind locally), a string with a slightly enlarged core, will give you more tension at the gauges you prefer.
Si