It depends if you want to get more power then you should wait. Or if you want two amazing ninjas. For 25k You can get Konan and Naruto 6p. Naruto 6p will cost you 14-20k. And this event got cheapest price, You would still get some nice power with 300 + potions you get from Fuku

You c*ways go for 10k Fuku. Get 40-45 Naruto frags and stop there. Unless you want to play a konan team there is no much point of spending more. On last 2 Fuku i spent 10k in each and got 8-10k power every time. Thats almost 20k power for 20k CPs..

I cant tell you whats best for you but i can tell you want im going to do. I will spend 10k on naruto frags and stop there. I will get 2-4k power from 300 potions. 80 frags of konans are great put i dont see a point of getting her if im going for 6p naruto. Now you will have to decide yourself what team you want to play. Do you want to focus on ninjas or power. But passing on this naruto 6p offer would be bad idea in my opinion. Its very rare to see 6p and FUku in same week. It happened twice when he came out and nothing in months.