Hi katycat24- You mentioned a messy child and a grubby dog. Will this be your family room? It is important to be realistic about the wear and tear the fabrics on your seating will sustain. Have you thought about a more casual look for this stage of your life than velvet and have sturdy washable (and even bleachable) slipcovers made for a couch, loveseat and easy chair? This way you and your family and guests can enjoy your room and relax just as you want them to. Why not have a look at The Slipcover Maker on this website https://slipcovermaker.com/fabrics/  that I found just by chance. A well-made slipcover fits neatly and doesn't look sloppy at all. Here's another unrelated thought, I don't know how long you plan to stay in this house, but sometimes people buy a sectional, and then when they move, or their needs change, the sectional doesn't fit the configurations of the next place they live or another room at all. And do people really want to squash themselves in the corner of the sectional? Maybe a sofa and a loveseat will do the same thing, or a sofa and two chairs, and a big ottoman besides. Just a thought. Your rug is beautiful. What is its origin? If you do a light colored (washable in the washing machine!) slipcover you can have vivid throw pillows to mach your beautiful rug, and also coordinate your wall art.

Pillows are Pindler and Pindler, a bit pricey, from etsy.com, but worth it for two on sofa Chairs, frame color relates to leather. Asian is the perfect default when trying to marry styles. https://www.highfashionhome.com/jules-chair-stonewash-ecru.htmlgclid=CjwKCAiAk4XUBRB5EiwAHBLUMQouvhyn-KC2yrlJUFyZQsMKzi597kigiernCUsOQCH3p95WWupVKBoC2hwQAvD_BwE [https://www.houzz.com/products/elmwood-ming-table-prvw-vr~10645018?m_refid=PLA_HZ_10645018[(https://www.houzz.com/products/elmwood-ming-table-prvw-vr~10645018?m_refid=PLA_HZ_10645018&device=c&nw=g&gclid=CjwKCAiAk4XUBRB5EiwAHBLUMe3FOvWQAkyXynX8tz8OAbF3Mev1PeGiAsnNWEgUY4uFkCrDzMD6QhoCAzcQAvD_BwE)

Is your couch staying or going? Here are a few ideas. It's hard to tell if they will work as your couch looks brownish on my monitor. These also come in other colors if you like the look. (Sorry I can't post the pictures). https://incrediblerugsanddecor.com/products/capel-hermitage-ii-9532-cinder-flat-weave-area-rug?variant=21246628742 https://incrediblerugsanddecor.com/products/chandra-sonnet-son-35900-grey-black-area-rug

That is a fabulous rug, and I'm especially partial since I have a runner in my foyer that is nearly identical. You can absolutely treat even that brilliant ruby red as a neutral, and do not worry one bit about "matching" your furnishings to it or creating Christmas should you opt to inject a jolt of green. The green sofa would actually be fabulous. I personally love reds paired with all different colors, but am especially drawn to it with brownish leathers of all sorts. My artwork is vibrant and makes it all harmonize well, I think. As the photos shared above so beautifully illustrate, you cannot go wrong so long as you work to balance your hues and layer in nuances. It's not as hard as it sounds; you seem to have a natural eye for it already. ETA: I think I do have the runner version of your rug.