I think you may enjoy the take of Christopher Dunn on Pyramids. This entire series is worthwhile (I also study pyramids and anything Egypt/Hermetic).

This #4 in the series has the most "meat".. so maybe review this one first and if you enjoy have a look at the rest of his work.

His conclusions is that they generated Hydrogen inside Giza accompanied by sound tones. He pretty much proves it.

Christopher Dunn is a Rocket Scientist (aerospace Engineer) and he began reverse engineering the pyramids when he went for a tour in Egypt.

Hope you like it.

Wayne Hilborn

Here it is. (upvoted this post also). Your pyramid sounds like a good goal, but you may be able to match the interior with the use of Hydrogen and tones inside the Hydrogen. What I am thinking is our modern science might be capable of a "Pocket Pyramid" of sorts.. something capable of the same things, but that is created with modern tools more efficiently and without a zillion tons of rock.