Will your be a planted tank or just shrimp only tank? I have a tank with ADA AS Malay and it is really bad. Don't get that. I also have the New Amazonia but somehow it break down already in a tank with Hair Grass and MTS. I am not sure if the MTS is doing something to cause the break down. Anyhow, if you are doing planting, FSS will be good. If you looking in to high class shrimp then ADA New Amazonia.
Interesting. I was planning for plants and fish and maybe a few amano shrimps to help keep things tidy. I like corys, but they aren't a must if they are going to cause the substrate to break apart faster. Plantwise I was just thinking some fast growing stems in the back, some midground crypts, and maybe something small up front (no plans for a carpet though).