Also check the coastal fishing reports section of ncangler.com
Missed the part about safety factor. It depends on what you consider safe. I would not hesitate to go but there will be lots of flow in the main river and some in the creeks/guts too. Just be alert if you are drifting to what is downstream of you so you don't go under a tree limb. Also watch for the occasional floating log coming downstream if you are anchored as well as when you are running. Keep current in mind when you are loading and unloading boat from trailer too.
Also check the coastal fishing reports section of ncangler.com
You will be fine out of Janesville. Good Luck!
If you have a smart phone get the River Flows app. It will show you USGS and/or AHPS gauges for a lot of rivers and creeks in the US. The chart shows from current to one week back.
Give a man a fish, feed him for a day.
Teach a man to fish, he'll sit in a boat and drink beer all day.