Yoann has some great builds there for sure. But you could also take out the after market cooler and the SSD if you wish to save more money.
For the most part, after market coolers are necessary if you plan to overclock your processor, but of course it never hurts to make sure it stays cool.
As for SSD's they are are a bit of a just a luxury item in a sense. They are a bit more reliable than traditional HDD due to the fact they are mainly electronic based storage instead of being mechanical as well as having (for the most part) much faster reading and writing speeds. You probably already know but many people will usually just get a low spaced SSD just for their OS and a few smaller things.
So those two are optional but it does not hurt to have them.