The lighter you can go and achieve the level of protection you are after is the go.
As you've stated you are fairly new to this there is something else to bear in mind. Not all of the bars available are ADR compliant/approved. Some of the coolest looking bars will not pass the test or even some of the ones which would have not been tested. The ADR is for the airbag compatibility, in order to ensure that the bar will not make the airbag timing be off (either early or late) due to the bar being too rigid. In the end it comes down to the level of risk you are willing to accept.
No, not the 'Elite' mine is a Rockcrawler as seen on page one of this thread.
As for weight SeaComms (Dave) found a list of bar weights a few years back. (Dave likes collating info, which is helpful)
http://www.ausjeepoffroad.com/forum/...&postcount=583
hope that helps