It sounds like you have things fairly together considering the situation!
If things do get tight, don’t forget that there are some absolute gits in the world. Take care of yourself, and run if anyone suggests any kind of situation where you need to give up cash (or the van, or take on debt) for a job, they receive wages on your behalf, or where your accommodation is tied into the job.
Keep hold of a bank account and if you get really stuck don’t be too proud to go and hammer on the door of the housing office / sally army etc.
The other thing to do is to get your name down with some employment agencies however you can. If you’re halfway motivated you’ll be the star guy that everyone wants working for them – the bar is set pretty low, so if you can turn up and knock off at the right time and spend less than 25% of your day looking at your phone, you’re sorted.