Great fun little track... did an enduro back there this summer, really enjoyed it!
The section from 2 - 6 is a blast - if you can get the line right, and have the balls to WOT it over the crest of 5, you can really embarrass some bigger cars there. Passed a DTM Volvo there once in a mild ITS car... not to mention being held up by AS cars...
The Lightbub and 6/7 are the tricky ones, and there's speed on the exit to the front straight too. Took us GPS-based analysis to figure it all out. No point tracking out of 6 - just adding too much distance to benefit from marginal speed increase (even in aforementioned ITS car - actually 944Cup). But you definitely have to track out wide from 5 entering 6. Same drill leaving the Lightbub - track out the first time, but after that no point tracking wide onto the front straight (by pit-in) - just wasting time driving the extra distance.
As for the 'Bub - we tried both ways. No point running the high line on entering. Better to stick it mid-track then apex, and easy to pick off people running high on entry. I found it a bit of a challenge to get the apex early enough to carry all the speed I could - just tough to find references. Maybe that'll improve with time.
Make sure to straighten out 8, too, going up the hill/exiting 7 - that was potentially a coupla tenths there.
Surprising how fast 1 is - too a long while to get up to speed there, 'cause it's so blind. Surprising how much speed you can carry through 2, also...
HTH...