Regarding "finding a team," who would want to trust anybody outside of his immediate family? For every one person you invite to be part of your team, you risk inviting every person that person is related to or knows. (When the SHTF do you think for one minute that person is going to say "no" to a brother who's a refugee from the cities? You'll get every kind of undesirable known to man.)
The same would then go for in-laws too, it should really come down to can a person be an asset or are they a liability. At the time they "show up" if they bring nothing to the table then they are more than likely not an asset, something the group should have planned out before hand.
If a SHTF and its bad like Portland is not going to be liveable better get out fast I'am sure any town out side of Portland is going to look at those getting out late as a swarm of "every kind of undesirables known to man".