N2 doesn't come around anymore so I will give you some definitive answers. Stop exercise 4-5 days before the test or else the extra THC you burned out of fat tissue will end up in the specimen cup.

A line is a line. If the line can be photocopied then it is a line. That line can be photocopied and thus you passed. You obviously still have a few days before the test so things are only going to get better. What day is this test from that you gave us a pic of?

They will not run GC/MS unless you fail the immunoassay test.

If it makes you feel better you could do a mild dilution like drinking 32-40 ounces of gatorade 1-2 hours before the test.