3 to 4 days in paris

hi everyone,
I along with my 3 freinds from india,will be travelling to czech republic for intenship and we wish to visit paris for 3 or 4 days at the end of may. we like to visit the following places

disneyland
The Eiffel Tower
Sacre Coeur
Notre Dame
Musee d’Orsay
Seine river cruise
Arc de Triomphe/Champs Elysees
Luxembourg Gardens
Catacombs
Louvre

we are planning to spend around 300 euros per person for travelling accomdation and food.would it be possible in that much amount?
so i want ur suggestions regarding
cheapest airline -from prague to paris
accomodation
travelling -bus/train/renting bicycle
places to visit-please suggest what should i add/delete from my list
I have ISIC card, so does it work here ,I mean that if I can get discount on Food outlet or travel tickets or anyother discount...

looking forward for a reply.......

When last in Paris i found the Metro very easy to use, and i saw practically everything i wanted in a day. But in any city i would suggest hiring a bike. Its alot more fun

I think 3-4 days in Paris is perfect! If you plan your time you can be quite efficient to see/do things in the same area or close proximity. As Mattyrex said, getting around on the Metro is easy, but you can't see out so bike or walking gives you more of a feel of the city. Look for accom that is central so you can walk from there too!!

There is also a bike hire scheme there, much like Boris' Bikes in London.

Have fun!