Not too sure about opening a storefront, but DH and I are looking at commercial warehouse/office space.
Our plan is that DH leave his job as soon as youngest DS finishes his undergrad degree. That should be less than 2 years. Then he'll go into business for himself full time.
If we buy a building or warehouse space we can share. Part for his HVAC business and a soaping/shipping/staging area for me. Office space can be dual duty.
We talked about including a storefront. But have pretty much decided it's not the direction we want to grow. We owned a skateboard shop when the older kids were in high-school, it required being there all the time. We used to keep a dining table in the back so we could at least have our meals together. I think expanding my wholesale/website sales makes more sense for us.
Plus, I can help him and he can help me.