Nope you're seen like a normal person and mobs will just be standing next to you while not attacking(high level people mostly instantly know what you'rre doing).
Oh and for the values just try going high up and lower the value in steps <_<, dunno if those work for everyone(some of my values didnt work for a friend for example).
LL/VC arent really needed, the mobs usually dont hit hard enough so you get the time to figure out the values if you made a mistake(dont be lazy and ask others to do it for you...).
Getting the right values as melee is harder cause of their range(well the range hack helps

).
PS: Oh (Solus)Outer that you here?
Send me a PM about your new Char if you got one I'm right now looking for more people on Solus to do BDs and other things faster(PS anyone from Solus might send me a PM ^^).