League coming up, need help with my vamp team

First post here! Hello fellow blood bowl enjoyers, we are starting a league, 9 games + playoffs and I'm going to play with vamps, first time playing them. I’ve played two leagues and a bunch of tournaments, but I’ve never played a single game with vamps. My team is fully painted and ready, which gets me two free skills as a league bonus.

Since I’m completely new to vamps, I’d love some advice:

• Should I bring the Vargheist?
• How many Blitzers are ideal in a fresh league setup?
• Where would you recommend placing those two free skills, which ones are most useful early on?
• What would be the ideal starting roster for a league format?
• And what should I focus on building towards by the end of the season?