Hi Matt.
As others have said, just look forward to the visit first.
I also recommend that you do plenty of reading up on the Phils and their way of life too, so when you get there you'll feel a bit more comfortable with the place and enjoy your stay more.
If you're not prepared it can be a bit of a shock to the system.
Have a look in your local library and get hold of the Philippines 'Lonely Planet' guide.
Good bedtime reading.
Don't worry too much about paperwork etc at this stage, there'll be lots of help and advice on this forum when you need it.
Make certain that she is going to be the RIGHT lady for you though....as much as that is possible.
What you do need to be doing is keeping all records of your correspondence with the lady, and pictures of you together in the Phils. That will help with any future visa application.
Keep your bank account in the black and try to stay in the same job and address.
The Phils is a brilliant place for a holiday, but pace yourself, particularly in the first few days, when you will be jet-lagged.
Good luck anyway.