To minimize post-layoff loneliness (and not only for that!) make sure you have a life outside of work: the people you like to spend some time with and things you like to do. To minimize money-driven stress of the layoff, build up a cash cushion that can last at least 6 months; with unemployment, vacation time and any severance it can probably be stretched for a year.
And #7, "think whether you want to work for that company after getting an offer" seems off the mark. Sure, reject an offer that is not the best and stretch time on a safety offer until you get a better one. But do not go through the motions of getting an offer with a company you have no interest to work for. If you do not want to work for a company at all, do not apply there. My 2c.