For the 'hey, you guys' thing, you might want to change it to 'hey, lads!' though NOT to laddies. One is English/Irish, one is Scottish. Very Scottish. Then again, when saying 'hello', it would usually just be 'Hey!' or something like that. 'Hey, lads!' would be more used in sentences like, 'Hey, lads, wait up!''
I'm not quite sure what you meant by your last post...it kinda confused me...
PS - mods, let me know if I can't answer here. I'm Irish, and I wasn't sure whether it was people from the British Isles or people from England who were allowed to answer.