The 737 will always be a good type rating to have but with only 250-300 hours flying to back it up you will have an uphill task when it comes to the line training !
If I was at your stage in the job market and wanted to buy a type rating I would look at a cheap turboprop type ( shed ?) and get some "commercial time " in and top up the bank account before your next move.
I,v seen more than one person buy a 737 rating and then fail to get a job and think that it likely that will be your fate , I would like you to prove me wrong but the odds are not on your side.