> I'd double my job-searching efforts, to have to option of leaving within a year or two.
Job searching doesn't work that way - if it goes well you'll end up with a bunch of offers that you'll need to accept or reject within some time frame; you don't get to bank all the offers you get and use them in two years.
It's always good to be employable, have relevant skills, be able to interview well etc. - this applies to good and bad markets.