OK, guys and girls. Lets calculate how many coins will be mined until PoW reward goes to 1.
Reward change target is one week. This is 2880 x 7 = 20160
First week.
500 000 x 20160 = 10.08B
second week
10.08/2 = 5.04B
3rd 2,52B. Actually its less than 2.52B from here, because PoS blocks start to appear in block chain from day 20.
4th less than 1,26B
5th less than 0.63B
OK. Lets compound. 10.08 + 5.04 + <2.52 + <1.26 + <0.63 = Less than 19,53B. Probably only around 18B is close to quess.
This is only 70B/18B * 100 = 25.7% of total coins. This means that almost 3/4 of total coins will be generated through PoS blocks.
Lets quess the estimates of PoS now.

Assuming that 18B will be generated through PoW. the PoS interests will be as follows:
18B *20% = 3.6B. Total coins of 21.6B after year 1.
21.6B *15% = 3.24B. Total coins of 24.84 after year 2.
24.84B*10% = 2.48B. Total coins of 27.32B after year 3.

OK. You see where this is going. This coin will not reach 70B coins any time soon.
If this coin gains popularity and gets some demand, then price of 200 + satoshis is very probable.
Please keep in mind that simple math done above is just rought estimates and not exact numbers.

Hopefully this post helped to generate point of view about this coin progress.