After a lot of deliberation, I have finally upgraded by pledge from $45 to $85. It basically made lot more sense mathematically.
With a $45 pledge, i would have received 20 untamed packs, 1 starter pack, 1 lvl 2 chained golem and 45 charges of legendary potions.
With a $85 pledge, i would get 40 packs, 1 starter pack, 1 max lvl chained golem and 85 charges of legendary potions.
My main reason for the change was chained golem. With the most conservative estimate a lvl 2 golem is 3 BCX and should be worth about $4.5 whereas max lvl golem is 11 BCX which should be worth at least $16.5.
Only time will tell if I made the right decision.