Mattress Forum

I don't think 1" or probably even 2" will be enough, unless you like a very firm mattress.  It might depend on how firm your springs are.  I think you might need both of those.  2" of 32 for a firm base level and 1" 24 for some softness.  That is what I started with, and  I still wanted to add more softness after that.  However, I have a Sealy with interlaced coils, so I am not sure how that will compare to your coils.  It is possibly they are softer than what I started with.  Do you have any info. on what kind of coils are in the S&F?

I assume you are going to put these directly over the coils?  Are you adding anything else on top?

Yes, they both sell LI and RMM does not allow returns of toppers.

One issue you might have is if the S&F has individually pocketed coils.  I am not sure if anyone has done surgery on a mattress like that.  There might be an issue with the coils shifting around, once you cut the top off and reduce the structural support?   You might need a tight mattress pad/cover to help hold things in place.

I'll make a post of what I find inside the S&F. I'm hoping there are some padding layers I'll be able to use since it was a very high end mattress.

Hate to break it to you, but honestly, I doubt you'll want to use any of the padding layers. The springs will be what you want to keep. MAYBE you can keep one of the top 2-3 layers if it looks good but chances are it will just be cheap pu foam. This is where the SCo's make a lot of money: they charge you $200-400 more for a pillowtop or "luxury" mattress just because it has an extra $40 worth of cheap pu foam! They laugh all the way to the bank because it is also the cheap pu foam that will get you coming back to buy a new bed in a year or two (or less)!