Decided for 300 rebellion packs. At minimum lvl 4 rare promo and lvl 2 legendary. I really wish I would have been able to afford 1000 BASE packs for 1150 after the 15% promo which would guarantee a max rare and max legendary promo. Oh well!
I think there were some charts shared, but I don't remember off the top of my head. Somewhere around 2700 maybe?