Thinking about coming back to 40k with BA; could use some guidance

[Deschenus Maximus]

Heya gents,

I've not played 40k since 8th edition, but he release of Armageddon is tempting me to come back. 

 

I'd want an all-infantry Marine jump/assault army, so naturally BA seem like the logical choice.

 

I want to avoid spam so I am limiting myself to 10 models of anything max, whether to be run as a single squad or two of 5. Where I can, I'd also like to avoid spamming the same characters.

 

So far, I think I'd go with:

• Commander Dante leading 10 Vanguard Vets (making the assumption here that VV will be available in squads of 10 when the new Marine dex drops)
• Jump Captain leading 6 Sang Guard (would much rather have Dane there but his +1 to hit is kind of wasted with them)
• Jump Chaplain leading 10 Jump Intercessors
• Lemartes or Astorath leading 10 Jump DC

 

So, question:

1. Is my plan workable or am I going to get ass-blasted every time?
2. What should I use to fill up my list to 2k?
3. Which Detachment(s) should I go with? 

 

Thanks in advance!