I know where you're coming from.

I have Sweetpea & PeaPod posted on three different rescue websites within my area. They are willing to put up their pictures and a brief history of them, since I am willing to keep them here as fosters and taking them to the vet for their de-worming, de-fleaing, vaccinations and spaying/neutering.
The adoption fee is $100.00 on one site and $125.00 on the other two, which includes everything.

Have you tried something like this for yourself?

Who's to say if 7 or 8 cats are too many and most of all, who cares what others think. My whole family think I'm nuts for having 6 cats and a dog. Do I care.......NO........I am happy with my babies and they are well cared for.
If you are able to have 1 or 2 added to your crew and both you and your hubby agree with it, then go for it.
If you can't keep them, you will know when the right home comes along.