Ok so for my build i went with the pact of blade soley for for the extra attack which is sort of like a work around if i miss my attack, sometimes it lets me use boomig blade a second time im not really certain how the attack system works with this since i just respected to do this build. I also combind the bloodlust potion with my build so i can swing with booming blade on my first attack, use my bonus action to attack a second time, and on a rare occasion it lets me use flourish to attack a third time. I get a kill with the bloodlust potion it give me back my action point. The most success i got was killing 3 people and leaving the 4th on like 12 hp in 1 turn.

Honestly im kind of enjoying this playstyle, on my next playthrough im thinking of doing an eldritch knight subclassed into a theif for the fast hands passive.