Offset feels early. Maybe add 10 ms. Also it is preferred if you have a timing section either before or on the first note. If you were to add a section on the 1st note, the offset comes out to 1737, so something like 1747 or so should do the trick.
Hard:
00:13:14 (1,2,3,4) - This just sounds incredibly awkward. I'd say more notes would clean it up. I would like you to mess around with it though instead of me suggesting something here.
02:51:73 (1,2,3,4,1,1,2,3,4,1,1,2,3,4,1,1,2,3,4,1,1,2,3,4) - This just seems kinda lazy.
EDIT I should probably mod normal, eh?
Normal:
Gets kinda jumpy at times for a normal... Like at 01:08:91() - and 02:58:65() -
00:13:14 (1,2,3,4) - Same thing as Hard.