5K for vip5, with the benefit he can get 10k in total or more, so 1st Growth Plan, he can do 8k and became 18k
Next, I assumed he did the gold change.
According to your words, he's vip5, to be vip6 he need 5k top up. To do gold change 7 slots, need 5k top up to unlock it, but he will be vip6 by that and also he don't have enough gold to do 7 slots, so I think he unlocked only first 5slots with 2k top up.
With that top up benefit, he also get around 4k total that mean he can have 20k plus 3-5k from slots (5 slots gives around 3-5k)
now now, don't forget we have Money Tree and Gold Wheel when he top up and spending. So in my opinion, to fill 15k gold is not that hard. Then he will have 40k gold to make 80k in total for 2nd growth plan.
I don't think it's impossible to make 80k gold within 2 growth plan.
We have had many of top up benefit during Christmas and New year time.
If you do top up wise and farming wise, it's a doable.
but that doesn't mean you can't have doubt. just get dev check.
Edited by BFE, 31 January 2016 - 01:25 PM.