I understand the concern, and it is not one that should be lightly dismissed, but in the end it cannot allow us to do good works, or not. Litigious concerns are what lead to bishops hiding child abuse, at least in some diocese. Lawyers can advise the best way to do the right thing, but should have no say in what the right thing is. So train people in Virtus and make sure everyone is properly insured an licensed. That is prudent. But if people cannot make Mass, and there is a way to get them there, it is the right thing to do.
To this end, connecting people may be the safest bet, if there are enough. If not, something more organized might be in order. No one can second guess what your parish does though. I am sure things will go well.