100 to 150A two channel that can do that is going to be a lot more expensive than a four channel that can do that bridged. And with the four channel you can get a lot more than 2x100 at 8ohms so you can have plenty of headroom for dynamic passages.
What's your budget? Even just $100 can get you some good used equipment on here or ebay.
If they're playing midbass, and they're up front, no. You want different channels for L and R midbass.would it better better to run them 200x1 at 4 ohms?