I didn't build my game table in a weekend. Because of financial reasons we built it over a 1 1/2 year time span.
That's significantly longer than we've been playing. I do really like the concept of a custom table, but I'm not sure I can get that rolling until we're really set into playing; even though it's been months and everybody's still quite into it, I am vaguely concerned that it might not last.
I will definitely be saving a bookmark to your links for inspiration when the time comes, though.
I've had a variety of set ups over the years, and couches never seemed to be problem.
Folding chairs, on the other hand, have been the worst, especially if people are antsy. I've had upwards of 5 of them destroyed over the years (of about 12 such chairs). So far, what I've seen work best so far are camp chairs (metal frame w/ heavy fabric or office chairs (high backed with arm rests) - though the latter tend to be more expensive.
My group was lucky enough to have someone skilled in carpentry put together two 5x5 plywood tables for us - they've lasted me almost twenty years now. Prior to those tables, we had great success with folding tables (6x3), so long as we had a plywood or other covering to span the gap between the tables (and a tablecover to make it look nice)
Don't also forget the shelving. You'll want something heavy duty as the typical superstore chipboard shelves tend to bend or collapse once you get a good gaming collection going.
My main "shelves" are actually part of an old entertainment unit, meant to house huge collections of VHS tapes; hopefully they will hold. For now, they do a good job, at least. The camp chairs are an idea I really like for when I can cut out the couches, as an alternative to office chairs. They're much cheaper and easier to store, I'd imagine.
I think your fear of the couches putting people to sleep is probably over-rated. Just hurl your dice at the snorer!
I think that is suitable punishment.
So for now, I've gone with the coffee table with plywood on top. The plywood sheet was larger than I thought - 8'x4' - and while I believed I had cut it at some point in the past, I was wrong. It is quite large. The coffee table is much smaller, and the length of the wood extends well past it by about a foot and a half on either side.
But it's really the length that's the issue. I ran through a sort of "test encounter" tonight to see how the mechanics of a battle would actually work, and I've realized that the answer is probably "not very well." My DM station is situated at the end of the table, so I will have to stand during battles and lean
way across the table (being careful not to jar the plywood too much) to move miniatures, etc. Also my reach is somewhat hampered by the rather large size of the table, so if the battle isn't close enough to me, then I suppose the monsters are going to suddenly become a lot lazier.
I have a fold-out table that's higher than the coffee table, upon which I set my laptop hooked up to the LCD monitor, which functioned well in the test.
I have some reservations about how this will go. If it doesn't work well, I'll just remove the plywood and play on the smaller coffee table (I have another one; maybe I'll double them up instead) for the time being.
My first game in the new room is tomorrow, so there's a good chance I'll be back to talk about how it goes afterwards.