Help me pick out a rig Our band is starting to play around town in bars and festivals, and I am looking to upgrade from my b160xl crate combo amp. I am somewhat familiar with how ohms/watts and all that works, but a little unclear in certain bits so I apologize in advance. It is my understanding that most bass heads have power ratings at 4 ohms and 8 ohms. I am looking at the GK MB500 500 watt head, which is rated at 500 watts at 4 ohms and 350 watts at 8 ohms. The cab I am looking at is a GK 410BLX II, which handles 400 watts at 8 ohms. My questions are: 1. Could those two work together/could I then turn it up all the way on the head without worrying about blowing the speaker 2. Are both of those good, quality pieces of equipment? 3. Other than cables and a bass, what else do I need to complete the rig, or is that it? 4. Could I later on buy a bass cab rated 200 watts at 8 ohms then hook that up to the head too? It is my understanding that that would make it a total of 500 watts at 4 ohms for the head and 600 watts (400+200) at 4ohms (two 8 ohm cabs run in parallel) for the cabinets. Thanks!