Turntable isolation

I am about to receive my new turntable. The turntable itself is going to weigh about 155 pounds. The turntable footers are Alto-Extremo LSP-2. I will place it on an 20" x 26" x 3" hardwood platform. This will all sit on a Timbernation rack. I have confirmed with Timbernation the rack will easily hold the weight. 

I am looking for suggestions to go between my hardwood platform and the rack. Currently looking at Herbie's Tenderfoot Extra Firm and Herbie's Big Fat Dot. Any thoughts on these or other products.

Thanks