You said you had connections with some hackerspaces. When I did a brief stint of homelessness I was able to lean on my local hackerspace to take showers and rec

You said you had connections with some hackerspaces. When I did a brief stint of homelessness I was able to lean on my local hackerspace to take showers and receive mail (a fixed address is extremely helpful when job hunting). If you go this route don't get too comfortable and start spending all your time there/sleeping there or you will attract negative attention.