Whey is recommended if you find it's hard to meet your daily protein requirement or you need a hassle free food.

Creatine is very good. Tried it and loved it.

Pre-WO is good to have but not a necessity.

Fish Oil is good to have like seriously. It helps you joints a lot.

But this is my acvice. Introduce those supplements to your daily diet one by one. That way, you can know which supplements are doing good for you or which one is not. There are some people who doesn't responded well with creatine, pre-wo etc2.