@TubeNoob I think you are unlikely to have much (if any) time for critical listening in the near or medium term, at least in that room. If you have any other space set apart from your common living area, I'd focus on a system for that space and not the one that is sure to be dominated by the full time requirements of caring for a new child.
Secure wall mounting, with speakers well out of reach, is a necessity if you want your equipment to remain in good condition. Stereo listening over speakers is mostly going to be for whatever your kid enjoys and finds interesting. You're not going to be blasting EDM for a newborn (or a toddler, or a five year old).
If you want to spend some money on a rig for that room, a headphone setup is more practical for someone with new or young children. I have school age kids and still find that any listening I do in the American "living room" is via a not exceedingly expensive, but still remarkably good used Stax system. Otherwise it's on a different level of the house in a dedicated listening room where my "real" stereo is located. Putting a lot of money into a "SOTA" stereo now is going to be a disappointment, not least because by the time you truly have a chance to use it, the SOTA may have advanced. Not to mention that the warranty period will have passed before you've even had a chance to put more than a few hours on your gear. Then you're stuck with, in the best case scenario, 5 or 6 year old equipment that has lost value, is out of warranty, and that you still haven't gotten a chance to use. While I wouldn't be too concerned with warranty on a modestly priced set of passive speakers, a lot of what you're considering here are close to endgame powered units that are a substantial investment, and I'd want to get my use out of them in the warranty period to shake out potential issues.
Briefly, I would spend very little on a system for your current situation. You're not going to get a chance to enjoy it to anywhere near its full potential for years.