Morelia Rd will take you to approx 565/570 but it’s a ways in there. Definitely need to know where to go in there at night.
There are options into 480-490. K149 access will take you in there
From 580 to Check 3, there are no chase roads but if you have people who love camping in the middle of nowhere, send them in there.
Like prerunning the race course, It’s equally, if not more, important for your chase team to pre run their access roads. We still have our team run their access roads that they will be accountable for on race day, even if we saw it the race before.
Hope this helps, and good luck!