ADUS,
(just another option).
Not to be contrarian...but have you considered a Futon.
We pulled our jackknife sofa out, replaced it with a Futon
purchased at Sam's... well built, perfect sized , color
coordinated to match the interior, long enough for better
then 6 ft. teenager, and comfortable. No regrets. These are
not your 60's hippie futons anymore. Works for us. Open or
slider in can still pass thru without problems.
If I could ever learn the secret handshake for posting a
photo on here I would show you... multiple attempts , escapes
my feeble skillset. At any rate... check out some of better
quality ones...might be surprised.
Charles