I completely redid that crossmember this time last year. That crossmember you pictured split in half right next to the mount in Colorado last august after three years of abuse. granted that toyota stamped sheet metal is kinda thin.
Also, I have not had good luck with bushing style engine mounts either. Seems to be highly dependent on driving style, vehicle weight, gearing etc. My passenger side engine mount ripped off the frame on the Rubicon last year after the bushing blew out and the bolt clanked around in there for a few miles. That was also after years of abuse though. Now I have a GM mount on the passenger/compression side and a Jeep XJ leaf bushing on the driver/tension side.
I'm sure you'll be fine though