Hi Ghost-Pepper,
For a first time audiophile, you certainly seem to have done some homework. Good stuff!
I just took a quick peek at your speakers' specs...http://www.monitoraudiousa.com/products/silver/silver-2/#/specification...and I would say the 40watt minimum recommendation is something you may want to consider carefully. In my own personal experience:
1. *IF* the watts are of comparable quality, having 90 watts here (vs 40) with an 88db speaker is no bad thing (see below)
2. And yes, if you switch speakers, its nice to have extra power
If these Monitor Audios are similar to other 86-88db monitors (UK, etc) that I have owned/used in the past, they will respond VERY well to the added power. And its NOT in the loudness...its in the EFFORTLESSNESS of the music (detail, not smushing notes together when music gets complex etc, the speaker does not sound like its being pushed...because the 'push' from the amp is not nearing the edge of its performance envelope so the signal has less distortion), the dynamic range being more instantly available for the loud snap of a drumstick, a flute, or a bass thwack.
Rogue makes good stuff. Good luck and pls keep us posted. Always nice to have serious first-time audiophiles join the crew. Welcome aboard and enjoy the music.