Shrimp are looking great man, nice job with the tank!
As to the Nilocg Thrive-S, I've had good luck with it in my shrimp tanks. I recently pulled some of my more demanding plants from my shrimp tanks, but my CRS are in a tank with a very healthy Monte Carlo/HC mix carpet and prob 15 other small plants. That tank is running on just a half dose of Thrive-S every third day and minimal CO2. I'm too lazy to calculate out the ppm, but it'll barely move my drop checker off dark blue. It's enough to make the plants respond though. I've also been running a DIY Oxydator in there too.
My Bee Shrimp tank also gets Thrive-S, and the plants are responding well. I do the same half dose, but it's enough to make the plants flourish. The tank is basically just easy mosses, Bucephalandra, Fissidens, and some Hygros, but they look great. I mean, if you were to compare moss with little/no ferts just "surviving", with moss flourishing in full EI, the Thrive-S tank appears much closer to the EI tank. This tank might even get lower CO2 than the other one I mention above, but the plants respond like night vs day, and the shrimp are doing very well.
Sorry to hijack... just relating my thoughts on the ferts you mentioned.