Yea I think you better, cause here comes a suggestion.
Sounds good, you could make it like a movie. Make a mission where you win this battle (Or something), and have a cut-scene at the end, then make all the missions with things like "1 year ago" and it builds up to the first mission.
PS: Soz, can't try your mission, I've got 1.46
PPS: That's becoming a real drag nowadays if you get what I mean :-\