The sofas and chairs are so much more functional than the sectional and will sit far more people. Looking at the configuration of the sectional you're considering, I can't imagine more than 4 people sitting comfortably on it. A group of folks aren't going to want to sit elbow to elbow on each cushion and it's not very conducive to conversation to be lined up. What depth of sofa were you accounting for in your layout?

No sectional gets my vote..You can also do sofa and 3-4 chairs..even better!

Rather than a love seat, consider two smaller scale sofas. Or a sofa and two chairs. I have a Flexsteel sofa that's 70" long with two cushions and it's very comfortable for two people. It doesn't overwhelm the space and it's still long enough to stretch out on.

If sofa faces TV/fireplace, you can have a chair where you had before-floating by partial wall and 2 chairs facing partial..2 chairs swivel..single could also have an ottoman..

I like your first configuration with the two sofas and two chairs. It would work if you moved one sofa further toward the window, used a more narrow coffee table, and left 18" between each sofa and the table, which would give you more room behind the further sofa as a walkway. The grouping doesn't have to be centered exactly on the fireplace. Instead of the end tables at the sofas, use one very small end table between the 2 chairs, so you have walking room into the seating area on either side of the chairs. The symmetry of the 2 consoles next the the fireplace is also nice.

Oh you could definitely use two sofas and two chairs. Or one sofa and four chairs. The room is big enough to handle it. Keeping the furniture on a smaller scale will help.