lol...not so quick there nos....
yes they are alright and yes, it is very difficult to explain. i think XS has almost like a cookie cutter setting sheet they will advise you with. at least a lot of them know buttloads more about ram than me
but, i can tell you that your advanced timings you have listed are (probably) as loose as they can be, with the exception of the tWTR, which most likely goes to 11.
"nagasama no longer drinks tecate, or streaks out of the night for anything, and he has a fine wife so he has no use for your girlfriend...she is safe..."