I tried this last night, and as far as I can tell, it was successful! I restarted and had to re-sign the changes in /boot. Right away I noticed during the boot process it used to mention "Debian 10’, this was replaced with “PureOS”, and the “About” section is updated now too. So far I haven’t run into any issues.
Thank you very much @spaetz @Dwaff!!!
Unless I’m missing something, this seems like the best of both worlds. 
Also, should I update the priority of the pin I created? I’m not sure I understand all the different priority levels.