I also created a Service Request Regarding this, and Rick responded. Here's his answer:
“Personally I would just wait until your ISP is supporting IPV6. I would imagine that it could complicate or could cause some problems in your internal network if you were to go ahead. I would continue to run in the normal IPV4 mode until the time comes that your ISP is ready to support fully the IPV6. You are correct that the RV180 does support the IPV6. There are some ISP’s out there that are now supporting IPV6.”
That pretty much answers my question. I'll just wait for my ISP to fully support IPv6.
I'm not sure how to mark this answered, so if a Cisco admin wants to do so, that'd be great.