Question About Maxed Assassinate skill

I tired of SB + BS macro at mini boss/ run it's slow but it has the highest chance to avoid any attacks. I have no motivation to lv up Shadower anymore and don't feel like to make a new class. Haven't level up for ages. until I decided to put the 7 sp i saved for shadow shifter into assassinate, a uncharge assassinate can do dmg 8~10k 3 hits + final and a fully charged can deal up to 28k~ 39K 3 hits + final but 6 sec charge. I wanna ask how much dmg a uncharge assassinate can do at max lv? Please help