That might work if I can stack two on each side that would give me 4 at a time. Bet we can build that no problem.
So my question of time and weight still is an issue.
My understanding is that the only reason to consider stacking the molds is because the weight remains the same.
So to the best of my knowledge the time and weight do not change when you are stacking the molds. I too found it somewhat surprising since the weight of the upper mold and cheese is pressing on the lower one. But I think you are supposed to rotate them when you flip them. Hopefully someone more knowledgeable will chime in as well.
Also, keep in mind that the hoop (or mold) you have a picture of up above in your original post isn't designed to be a stacker. So in addition to some sort of a follower that you'll need to rig up for it you'll also need some sort of a spacer to go between the lower and upper mold. This has been discussed quite a bit in the archives, if you'd like to take a look.
The alternative is to purchase a mold that is designed for stacking like the Kadova. However, they are more expensive. The Kadovas have been discussed quite a bit as well, so lots of info available there.
Lastly two threads on the making of the cheese press that I think you'll find very useful:
My Dutch cheese press...hooyah!Eric's over-the-top home made cheese pressIn fact the archives of this whole forum I think are a must read before delving into making your own press. But that's just my opinion.