Ooo... that's a beauty! Rare as heck and in unissued condition. Badging is tough to get as well. You did well
Rip has some pretty good rules of thumb to go by. Here is my quick overview of the digital desert uniforms with guaranteed ID features in bold:
1st Model, 1st Pattern - what Rip posted above. FOUR POCKET, SINGLE FLAP ARM POCKET
2nd Model, 2nd Pattern - high poly count smooth cloth in slash pocket cut. EXPOSED BUTTONS
3rd Model, 2nd Pattern - same cut as 2nd, but better smooth cloth. COVERED BUTTONS
4th Model, 2nd Pattern - same cut as 2nd/3rd, but ripstop cloth. RIPSTOP (if you can see the details) + MORE RED IN BASE COLOR + VELCRO SQUARE
Velcro on the arms can play a role in identification, but as with all things Estonian "it isn't that simple"
Full pocket velcro (rectangle) is 3rd Model by default, upper pocket area velcro (square) is 4th Model unless it is a UBACS.
Remember also that Estonians field modded their uniforms a lot so present of velcro could be field applied. That can confuse things right there.
But more importantly, the 3rd Model appears to have come in two forms:
1. No factory applied velcro at all (I have pictures confirming this)
2. Rectangular velcro that covers pretty much the entire pocket (2007 in my collection)
The non-velcro type makes it possible to confuse it with 2nd Model as the two are otherwise identical unless you can see the pocket flaps. But I don't think there is a 3rd Model with square velcro like the 4th Model, so there is that.
Next, we have the existence of several UBACS that had square velcro, no velcro, or a combo. Might be even more variations, I don't know. So always look around for signs of a UABCS to rule that out.
The none vs. rectangular vs. square velcro is more confusing in the temperate world, so let's not go there
As for the photo... I'd guess 4th model. Colors seem to be going in that direction and the velcro patches seem consistent with it. But honestly I can't tell!