im not gonna read the whole thread and i know you dont wanna talk about impedence and that you know how to wire speakers, but that is a big part of your decision. either way, can you post a link to the amps, theres more info needed if you want a real techical answer.
but in short and from the info i know, just run with the mono amp. there is no real big reason either way on why or why not to run with the mono amp with the info you gave us, but overall with a mono there is less complexity with them. no channels or different transistors, diodes, resistors, capacitors, etc... to run through. more basic design, less components to drop signal across, and more basic wiring configuration inside.