Splosh,
I'd check out the requirements for ATPL issue vary carefuly, particularily with night and intrument hour requirements. I need just under 200, but of those nearly half have to be night, and that's the problem. I've done over 400 in year in the past without instructing, so I know I could get the 1500 at a push, but short of flying all night in winter (not a prospect I would relish in a single), I cannot see a way to make the hours up.
Have fun doing it.
PS