Lets start with your batteries, what do you have in there and where did you get them from?
Do you play other sports? Games? You seem oddly competitive about that one.
I would look at manufacturer's specs on coils (go to the smok manufacturer's page) and figure out which tank you want (to confuse things further, you don't HAVE to use a smok tank, but if you are into smok, go read all the wattage ranges on the tanks and coils, and select the one with the lowest resistance your batteries can handle).
Need to know what batteries you have, as if they aren't new, authentic, and not rewraps, the wattage range of your BATTERIES is what limits you, not "how high" the mod will "fire." If you don't have the right batteries, you may "think" you are firing at 267 watts when a) you aren't, the mod just struggles to fire "as high" as it can get or b) your mod will refuse to fire, as it can't draw the required power from the batteries.
Before you go and buy new stuff, WHAT BATTERIES do you have, and from what vendor?
Anna