There are plenty of people here who can supply typical APS and structural MTOW weights for such an RJ, (indeed for this exact RJ) and others who can supply a RTOW for the runway involved if it applies. So far this critical info has, rather surprisingly, not appeared.
Perhaps it is time it should.
Several posts have expressed interest in sighting a copy of the loadsheet. Given the conduct of this flight, are we naive in assuming that there was a loadsheet?