You are good to go with that one as long as your TaiPei flight is punctual. 1 hr ahead to check in Domestic counter is OK, moreover, Intl terminal is just beside of Domestic one. You can even walk in there.
Airport have shuttles minibus
from international flight to
As long as your Int flight is on time you have plenty of time to check in 1 hour before your Heho flight
don't you think you're paraphrasing my mesg.. :P (Now my turn)
It's a joke.