After attempting Maat like 7 times, I finally beat him...lucky number 7 I guess. Anyway, the best place I found to get blm tests is the far southwestern entrance to Quicksand in Western Altepa. You will need to go off the map to find it. Best part is you can take a bird from Rabao to get there.
Once you get in and go down a couple of sets of stairs, there are two groups of Antica that spawn right there. A 68-70 blm/whm can sleep/nuke solo the quaestor, keeping it silenced...usually takes about 10-15 minutes depending on the level of the ant. Of course, having it get into position where you can safely pull it is another story, and can take upwards to an hour for it to happen. When I could, I would usually bring at least one other person (rdm to help sleep), who would get aggro and zone while I took the quaestor off of them (that's it! abuse the despawn rule!) The last time we went, we had 4 people and turned it into a skillup party. Taking everything else extended the time to a couple of hours, but it was fun and the test dropped.
That group is definitely the ones I would say to face for a test.