WG Jump packs, seeing as you are trying to get into melee ASAP I would go with combi-flamer and chainsword or frost swords with SS. 5pt for a SS that allows a huge increase in survivability is worth it imo.
I'm still trying to find those axe's, they look a lot more Space Wolf than chainswords do.
The scale on the old weapons and gear seems to fit these new Primaris-sized models better than before. I wonder if you could use the old jump packs on the Primaris so you could still distinguish between Jump Packs and Intceptors, if you want to use inceptors in the future.