2 weeks in Fiji - 27th March - Advice

Hi all

I'm flying from Sydney to Fiji tomorrow!

I only have 2 weeks there and I want to cover as much as possible in that time.

So far I'm thinking of:

1/2 nights in Nadi

Yasawa
Beachcomber
Waya
Naviti

Do you think I am being too ambitious to cover that in the time frame? Is that route ok?

Are there any must dos or amazing experiences I have missed out that anyone could recommend?

Any help would be massively appreciated.

Big thanks

Nish x