Dude, I'm totally crushed you didn't ask on OzBass
D'Addario have a chart which shows you the tension of any given gauge of their strings at a given pitch - just check it out on their website.
Look at the tension of a standard .045 - .105 EADG set at normal pitch, make a note of the total tension. Then move across the chart to find each strings tension when it's tuned up a fourth. Do the same thing with a suitable B string, and add up the total tension. The ask yourself if you really want to subject your bass to that amount of tension...
Of course, that's only for D'Addario strings, but it will show you the relative differences, which you can use as a guideline.
c-
(award for most repetition in a single post?)