Vacation To Boracay Or Palawan. Six People.?

Hi, my sister and I are planning to go on a vacation to either boracay or palawan. I want to have an idea of how much we should save. Were going in about 2 years. I know its far in the future, but we really want to prepare and make it the best vacation ever. I’m going to be paying for myself and my 2 friends and my sister is going to be paying for herself and her 2 friends.(They already live in the Philippines.) So could you guys give us some suggestions?
So we want to go somewhere that has nice hotel rooms, but it doesn’t have to be a 5 star hotel. We just want it to have a comfy bed, fridge, tv, air conditioned, and a pool. Doesn’t have to have room service, but should have restaurants in the hotel or around it. Oh and the hotel should be walking distance to the beach.
We want a place that has a lot of sight seeing. Some place that we can go scuba diving, banana boat riding, kayaking, boat rides, island hopping, underground rivers. Things like that, doesn’t have to have all of it, but the first three I listed is a must. Were not much for bars and drinking. ( Well be three 21 year olds and three 19 year olds.) Although we would like to see some people. ( Hot guys! Haha!)
Sooo… Knowing all that info. Here are my questions.
1. What place would be ideal for us? Puerto Princesa, dos palmas, el nido, honda bay, boracay, etc…?
2. How much would a hotel like what I described cost for a week?
3. Do you have any suggestions for a hotel like that?
4. How much would water activities cost per person?
5. How much do you think 7 days of hotel+food+activities cost for 7 people?
6. Do you have any suggestions of other places I didn’t say?
7. Could you maybe make a little itinerary for me? (Thank you so much!)
8. Do you think its will be safe for 6 girls to go alone?
9. Around how much will 6 plane tickets from manila to where ever you suggest cost?
I cant think of any other questions right now. So thank you so much if you answer this question. 😀
BTW, do you think renting a house for a week will cost less instead of going to a hotel? Do you know of any places that you could rent a house or cabin (like in dos palmas)? How much is something like that anyway? It should still have most of the activities and things I mentioned earlier.
Oh and don’t include the plane ticket from CA to the philippines in your estimate of how much we would spend. Thanks a million!:D