TW Raven Owners: Set Up Questions

I use factory bench with 4 inches slap of black granite right now with my TW. I have a friend that in the past had tried quite a few different types of stone for amp/speaker stands etc before and he found best result using black African granite (supposedly it has higher density than average granite!) In the past I tried slate but the result was not great. At least for those that I could find locally anyhow. I was trying to get a quarry to cut me pool table slate slap and it was a big hazzle and trying to get them to polish slate smoothly was almost impossible (may be I need a pool table factory for this). Anyhow, the one I got was not so great. However, I just located a used Symposium ultra locally that is big enough for my Raven AC-1 so hopefully I will try that in the next few days.
Vibraplane is also something I want to try or perhaps Minor-K. However, I am still thinking that eventually I might try to get BN 3 motors unit for my Raven so until I know for sure what size the turntable platform will need to be, I don't want to invest a lot on platform for my turntable just yet.

I use a wall shelf and have tried a number of isolation feet. The problem with heavy granite slabs is the wall shelf might be overloaded. You don't want the table falling off the wall.
I have used a number of feet, stillpoints, black ravioli, Herbies Isocups. the New stillpoint SS Ultra are marginally better than stillpoints+ risers, not enough to justify the added cost, but better

In addition to the above, granite can be OK if damped by gluing linoleum to the underside.

I have experimented with a variety of mounting possibilities for my TW AC 1, starting with a granite base(not good, a bit of ringing) to a HRS platform sitting atop an acrylic stand( not recommended). The AC1 has been tweaked with a BN PSU and motor. This required more real estate and led to a wall mounted 2.5" mdf shelf on brass cantilevers. Wall mounting is by far the best if it works for you. The AC rests on a HRS platform while the BN motor has a separate mdf platform and the whole package is on a wall mounted mdf shelf that can support upwards of a 100 kg !
Any of the well known iso platforms should work well. I would urge caution regd the feet. Any hint of rubber or non metal in contact with the feet can deaden the sound ,as I discovered. I have the HRS couplers that consist of a round metallic plate with rubber dampers on either side. Initially, I had the 3 TW footers resting on the metallic coupler sans the rubber damper on top.Sounded good but removing HRS couplers led to dramatic improvements.
Use only the TW arm board as opposed to a wooden armboard .
All the best
Pradeep

I am curious about wall mount shelf. My apartment has solid concrete floor with tension cable runnig through them. The floor is very solid with a layer of MDF and solid oak floor on top of concrete layer and is supposed to support about 400 kg per sq meter. The stereo equipment is placed near outwall of the apartment which is non weight bearing wall with windows and basically a brick wall. In this case, the floor is much more solid than the wall in my opinion. Foot fall is never a problem. In this case, would I still expect the wall shelf to be more benefitial? The factory bench/granite top that I used weight in at almost 100 kg.