3 and 4 are most important.

If you believe in crypto long term then you should have no trouble making sustained amounts of profits just from buying through DCA and holding onto your tokens tight.

Make sure that you are well diversified though, because one of the most common mistakes that people make when they first start out is the obsession with picking winners. You can't always pick winners, but you can certainly pick trends - and the long term trajectory for the entire crypto market is up.