You’re finding the intricacies/compromises involved with putting a system together even with a decent budget, and the aggravation involved with all the choices.
Adding a 2-channel, 200W, amp from NAD, Parasound, Rotel will add at least C$1000+ to the expense. You also don’t want to go down the receiver chain too far because you still need decent power for the center/surrounds and pre-outs for the amp.
Unfortunately, speaker specs don’t always portray the whole story. Some to watch for regarding the need for a separate amp are; impedance < 6 ohm, sensitivity < 87dB. Reading 3rd party reviews and peoples’ input on forums like these can provide a better understanding of a speaker’s capability.
Any of the receivers above on their own can handle the Paradigm S-60s, Axiom M60s and even the 4 ohm load of the M80s.