Happy to hear it works well!
Someone on a previous thread described it as hunting with a scalpel. It has that swoosh, flowing shot without recoil and it feels like it hits where you point it. I, personally, feel that at least.
Bear in mind, your gun has an 11mm piston/shooting barrel so don't compare your pressures to 13mm guns. Well, you can but then just multiply the pressure quoted for 13mm guns by a factor of 1.4 to have something comparable. So, 20 bar is a fine starting point but actually not high at all, so once you get a hang of loading it, you can certainly take it higher. An easy way to do it is to add about 50 pump strokes before a dive day so you don't end up putting too much in in one go and ruining your day in the water. Add 50 more strokes before the next dive day if you feel you can still easily load the gun.
Airguns are measured differently from Euro pipe guns and sadly, a tad differently between brands, even. But then again European bandguns are measured different from US ones. It's a jungle.
I speculate the trigger feels different than a good one on a bandgun since it doesn't break as predictably. It is more like the same feel, slightly bland pull and then it breaks but there is no change in the feel until that happens. I think when you have shot it more, your fingers will develop muscle memory and you will know when it fires.
The line release should trip before the shot. That's very important. Otherwise the line can rip off the release, maybe even ricochet the shaft at worst or at pull the shaft to a side ruining accuracy. But it shouldn't let get too early either.