Hope your A&A journey has gone well!
As im planning to do something similar with my walk-up apartment in future, i'm curious as to how this conversion has or is turning out for you.
Were you able to make use of the roof as you originally intended to, considering the not-so-clear rules with regards to GFA calculation and the property being a landed (although strata) one? For me, if i were to convert the attic into a loft, I may have to do some reroofing which will be another hurdle as the adjacent unit shares the roof.
Would be great to hear from you and if there's anything that is not ideal to discuss here, I'll drop you a PM :D