I'm considering my husband's hoa stuff a hobby
Do you like this hobby of his?
I love anything that makes my husband happy, this hobby of his is no exception
As long as you feel he is doing something he likes there is nothing wrong with it. You should be there for him while he tries.
I really think this hobby is going to benefit the family business.
It's good to support your husband throughout this. Having the optimism that you do will be very beneficial toward yourself and him.