Ok so I've made some edits, mostly based on what [MENTION=79274]Ravenheart87[/MENTION] recommended. Thanks very much!
The text in red font in the document is to be deleted, I just left it there for the time being so that the comments make sense.
I still have to write up the climactic final encounter against the efreeti in the last room and then add treasure and then I think it'll probably be more or less ready to go!
Can anyone think of some cool treasure for a third level party that would work? I'm pretty clueless...