Basically I've bought two RS210 cabs for the portability (and I thought they sounded pretty good for 2x10s) and i need an amp. Im looking at the markbass LM iii because its something I've played a lot in the past and liked. What im wondering is how these will pair up; the amp is 100watts rms more than the cabs if i had both hooked up, so if im using both cabs ill have headroom and have to watch how i push it to be safe. But if im using one cab ill have to be careful of the amp clipping and damaging the cab that way because the amps rms wattage will almost halve because of the 8ohm cab vs the 4ohm head. It seems like ill be going against both the people who say you need amp headroom AND those who say you need a higher rms rated cab with this setup, depending how its configured. Is all this correct? Ive been trying to learn about all this recently and im confused by some things that just sound counterintuitive. Like the ohmage decreasing to 4ohms with two 8 ohm cabs, and so on.