thanks for the compliments guys I think she'll be a monster come harvest time!
shrike: You're right about the soil being sandy...it really is. So we dug a pretty damn large whole and filled it with our own mix 107 gallons of Lambert peat and perlite mix (same stuff as pro-mix), and 30 litres of organic potting soil, plus organic ammendments. It's pretty much the same mix as I use indoors (minus the potting soil) but on a much larger scale.