I would personally take option 1 for at least one year, build up some hours and experience (especially low level) and then go back to the boss of the 212/412 job and ask him if there is any work.
I've never done fire fighting work, but i can't imagine it to be the easiest type of flying. I'm sure some of the more experienced fire fighting boys could answer that for you.
Just my 2 cents.
But as you say, its a good problem to have.... isn't it.
NiB