Modern Home Decorating

I have made 4 friends at my new school. I know my birthday isn’t until May but I want to pick what I should do for my birthday.
Most of the children (friends included) come from low income family’s can’t afford a shopping party or can give me a gift BUT I am ok with that
My friends are girls of all different ages.
One is in 8th maybe 9th grade.
2 of them are in 6th.
2 others are in 10th grade.
They are all my friends and we all get along well together.
Their will be me and them at my party. Which makes 6 of us girls.
I live in south Florida and I have a few options in my home town and towns around.
Some of my options are
Spa Day – at WoodHouse Day Spa ~ it is very near our school and my mom could pick us up from school and take us there (because most of the girls don’t have rides)
Beach Party – I’m not the most appealing thing in a bathing suite and the other girls are. But also what would we do at the beach? There is a place to eat cake but that would be GRRROOSSSS and why would we go to the beach after school on a Friday that is something you do on the weekend here.
Ceramics – but the thing about ceramics is that we have to pay for everything ~ the ceramic thing the cake the pizza or food AND then what do I do after ward ? Have a sleepover at a hotel ? my house can’t hold all of us
Hotel Party – have all the girls bring clothes and a bathing suite and robe and slippers and have an amazing slumber party with junk food and a room decorated with favors.
the last thing I could even think of is taking the girls to an amusement park like disney or epcot?
Spend the weekend at a hotel like nickoloden resort or laki tiki?
I just don’t know what to do or where we should go ?
If we spend 2 days in a resort we could get room service and go get our nails done but like I said thats all on me and my family (the money)
So please help me
I want to make invitations and order personalized party favors and have my cake designed special
but everything is so much money
Please HELP ME find a good median between all my ideas and problems

http://purpletrail.com/partytrail/birthday/teens-birthday-party-planning-ideas/

http://www.teenpartyideas.com/

http://www.celebrations.com/teen-birthday-party-ideas?sort=first

http://www.teenpartyideas.com/html/miscellaneous.html

http://parentingteens.about.com/od/partyplanningresources/a/teenbirthday.htm

http://www.party411.com/teen-birthday-party.html

http://www.pink-heaven-party-ideas.com/teen_party_ideas.html

http://www.birthdaypartyideas4kids.com/index.html

http://www.momswhothink.com/birthday-party-ideas/teen-birthday-party-ideas.html

http://birthday.lifetips.com/cat/64634/teen-birthday-parties/index.html