Hey Dmitry!
By all means get an Anovos! If that's what you want, then get it. I have an Anovos myself.
The ESB trooper as you stated is just an ANH trooper but with small differences. The paint, the holster, and the hand plates.
I've seen some people on here build ESB troopers from the Anovos kit, you'll have no problem. So the plan you have now should be fine!
Here, compare the two troopers to see the differences.
ANH and ESB