I would park at Brandon (it’s cheaper) and then head over to the waymarked trails that start nr High Lodge.
I did this screenshot for someone who was asking a while back.
Basically go back out of the Brandon car park & cross the road. There’s a fairly subtle trail turning to the right within the first 30-50m. Take this and you’re basically on the squiggly line that follows the B1106.
Follow the red line and you’ll end up at the start of the two waymarked trails.
One of them has a short & long loop. Basically the long loop will add a bit onto the middle of the route & eventually you’ll end up back at the short/long loop split, so then taking the short loop will carry you on to the end of that trail.
You’ll have plenty of time to do both of the trails.
(fingers crossed this pic link posts OK)
Brandon car park to trails. by STW stumpy01[/url], on Flickr