This is the sentence that made me think you might be planning for more than just putting family members onto the sofa for their photos to be taken...
Sorry if I got it wrong. I never ever mean to be arsey to ANYBODY on this forum.
You were upset you had 50 views and no reply and I wanted to give you one.
One that would express my thoughts, most of which were genuine questions.
But your apology's accepted, how could I not?
We once had a (much missed by many, including me) member on here called Hertz van Rental who started a series of "People and their Sofas" (it should still be in the Photo Themes somewhere) --- back when he still did professional photography and teaching, he took very many photos of the kind, of celebrities and all.
So yes, a sofa as co-subject to the people shots you plan to take is a good idea. The white wall could even be of help to keep your photos as simple as possible, with as much focus on the people as can be.
Right now, in THIS one, the flash is too strong, yes.
All the whites almost glare.
You'd have to work on that.
And are you asking for help on THIS very photo or for help on the set-up and photos that you plan to take in the future, then? (Not necessarily to sell... as I now understand, too).