Curious about compatibility issues adding a new exotic pleco to my tank

[Life Liberty Cichlids]

I have a common pleco in my tank already. I recently found an L059 Gold Dot Bristlenose, L124 Sabaji, and L128 Bluespot Phantom at a LFS. I have an 80 gallon tall with a few rock structures and a decent sized log. I'm nervous because my cichlids and loaches both like to swim through the rock structures. They leave my current pleco alone, I just don't want a new addition being stressed because he doesn't have enough space to hide. My water is kept right around 80* with a PH of 7.8. I was curious if A) you think I could keep two plecos in the tank or if I would have to return my original first, and B) which, if any, of those three breeds (the L059 Gold Dot Bristlenose, L124 Sabaji, and L128 Bluespot Phantom) you might recommend as far as hardiness toward aggressive swimmers and hard water.