You're obviously going to ride the enduro stuff so is your aim to do loop style trails (XC) or gravity fed stuff?
Some things local to me that I'll suggest:
-Kemspey enduro trails. They are great, easy climb up with some super fun descents. It's not far off the highway, easy to get to and fun.
-Nambucca XC loop (Jacks Ridge). Its the only loop worth riding in this area and is fun as with some easy climbs and cruisey descents.
-Mt Coramba. It's a downhill trail that an enduro bike and advanced rider love. You can ride the fire road up but shuttles are our thing.
The old Coramba trail was heaps of fun, so the new one must be even better. As for travel requirements, I rode the old girl on a lot of different bikes but had the most fun on 130-180mm bikes. These smaller nimble bikes felt perfect for linking up and railing the berms network while also sending it off the jumps. I'm by no means an amazing rider, how does this new trail compare for such bikes?
Depending on how many stops you want to make for riding, you can get started with Ourimbah and/or Awaba on day one. Then all the stuff around Newcastle.
Or there is a trail network near Armidale which could be an option on day 2 if you decide to take the New England Highway.
There is some good riding in the Newcastle area. An easy one would be Sawmill which is near Morisset if you want a nice long generally downward ride. It is mostly untamed wilderness rather than groomed lines. I'm pretty sure it has a strava segment. Glenrock by comparison has a few legit and marked trails that are mostly flat winding well groomed rutied xc trail, 1 reasonable climb, and a few challenge areas that include some moderately tame dirt jumps inspired mounds of dirt. There may be a few short push tracks with some jumps etc on them, but I wouldn't know anything specific outside of what is on the clearly marked map at the entry point.
Thanks for replies so far.
I'm thinking Glenrock in the morning on the first day, then up to Kempsey for the night. Ride Kempsey in the morning then up to coffs for the night. Ride nambucca in the morning then up to Brisbane.
Maybe Bris after Mt Joyce then Byron on the way home if there is anything worth riding there.
As per my comment above...that's somewhere I ride a lot, but not because it is amazing and exciting. I just live near by.