I'd highly recommend making all of the jc pieces. They may eventually be replaced, but they give a huge upgrade now and will enable you to spend your badges elsewhere until you do get an upgrade.
I'm a jc/bs as well and I just dinged 80.
I have around 4k more hp and a bit more armor and similar avoidance.
You actually have a better chestpiece and belt.
Some easy upgrades.
There is a level 74 quest that is soloable at 80 that leads to a nice ring
http://www.wowhead.com/?quest=13098
look for Refined ore gloves
http://www.wowhead.com/?item=37671 on the ah
I'm hoping to get your belt from the AH and get a chest upgrade this week.
good luck!
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