New player

I am completely new to the game, I have come from titanicus (I have quite a few titans).

I do love my Astartes but Solar Auxillia does not interest me. So the starter set is not appealing.

I would like to build a starter list to springboard off, however I don't know what I should pick up first.

I know points wise the new combat force that is coming out isn't great for Astartes for the cost, however is this a good start?

Can I get way with spamming dreadnoughts for instance?