I think that if you have a civil ceremony and get married by a judge in the nearest city to where she lives, the paperwork will not take too long to get processed. This would also allow at least some of her family to attend without having to travel all the way to Manila.
I think that in the grand scheme of things, the time it will take to process the paperwork and get the marriage certificate should be the least of your worries.
Cheers,
Iain.