Dragan,
1. I believe AUTO RBW/VBW is a function of Spike. If you like the RBW that Spike selects for your measurement, simply use this RBW, and set VBW = RBW.
2. In the same saConfigSweepCoupling function where you set RBW, set Reject = true for spurious reject
3. saConfigAcquisition is where you select average or min/max