I think it all depends on how you'll be using the table. My LR furniture flanks the coffee table on 3 sides, but I have it centered in front of the sofa, and it's scooted closer to the sofa than what your table is in the picture. Since you have an end table, both sofas don't have to have access to the table. I would get a rectangle table (not a narrow one) so you can have more foot traffic where the chairs are. Then center the table in front of the sofa which is used the most. Nice room! Love the light in there.

Don't go overboard with the acryllic. There is plenty of it already. Remember the purpose of a "coffee" table is a place to set down your coffee cup. Therefore, I think it should have more substance than acryllic so your room doesn't look like a show room for an acryllic manufacturer. I wouldn't mind if it matched the silver sofa table either. Center it with the FP, and draw the seating to it. I think once your seating is gathered around the coffee table, the navy bench will fit nicely at the window, behind the two chairs. Here's a run-down of what to think about when shopping (from Vern Yip of HGTV.) https://www.hgtv.com/design/decorating/design-101/10-tips-for-finding-the-perfect-coffee-table-pictures

Before buying a coffee table, it would be great to provide a picture of the whole space; without seeing a bit more, hard to suggest appropriately, ie: perhaps seating may work better facing each other for flow and that will dictate size/shape. Keeping an L-shape, could you exchange the two if wall is longer where love seat is presently. Pull couches closer if you need to and again that will dictate table size. (It’s nicer to have couches‘ front feet on rug anyway.) What size rug did you purchase, as a small rug with large square coffee table can feel off; a smaller rectangle table may suit better. There’s lot to consider prior to buying, in order to create the best functionality and balance.

Get a 42 to 48 inch ROUND!!! cocktail if you plan to leave that ottoman in place. You'll have a comfortable 15 or 18 inches of clearance, and no nicked knees or shins. Keep it very light and airy and open. Marble top on iron.....glass on iron or another metal. If wood? Round, Light and VERY open, no shelves etc. Anything else will look like a HUGE SOLID and heavy, "blocky" mass in your room. (Just one, of the many reasons I hate that sectional configuration). Boxes you in, quite literally. Maybe just go to bed? : ) Do NOT add another upholstered thing to that configuration unless this is your basement for the kid sprawl. Even this below." To my mind a bit boxed in but better than a big square. Alas......: )