Astro..The easy part is the pipe connections, and it is exactly as you said (“in series”)..one in front of the other.
The hard part is going to be getting permission to do that from the DEP…DER…The local Fire Marshall…and a permit from the local Building Dept.
There are major fines for storage of flamable materials or things that can pollute the ground water…be sure to clear it with the authorties first. Lots of luck
Bud