My company was part of a partner acceleration program, however you can apply to be part of the Google Cloud for Startups program here[1], without needing to be in an accelerator.
A current happy Google Cloud customer here, who also received the Startup credits.
When you have credits on your account none of the alerts or budgets work (at least they didn't when I was using it).
The only thing you could do is look at your figures daily and plan/scale based on the running total.
I use Mac OS X FileVault2, with a firmware password. It's incredibly easy to set up and should be good enough to protect my data from the majority of thieves.
Coupled with encrypted Time Machine backups and Arq[0] I feel relatively ok about losing my machine.