Miners dumping coins on exchanges was never your problem.  That's the only thing this full PoS solution really solves.  

I don't know what "experts" in the crypto field you spoke to, but you only heard what you wanted to or were fed bad advice.  PoS with a 7 day minimum coin age is a disaster waiting to happen as far as the blockchain is concerned.  It will be fine... initially.  There are plenty of people with a whole lot of coins not doing anything with them.

 But at 30 second blocks (I'll review the code to see if your PoS implementation is on the same schedule as PoW), you're going to have 20,160 blocks in each PoS minimum age cycle.  I highly doubt you wrote new code that restricts the total number of coins that can be staked in each block, hence you'd need 20,160 separate instances of stakeable coins every week to keep the transactions times constant.  

If we make the assumption that the average wallet may have quite a few different coin ages in it at any given  time, I still wouldn't guess there would be more than 25 stakeable instances per wallet per period.  You'd need 806 wallets open 24/7 with stakeable coins to hit that number.  That's assuming none of them ever move them.

Which is the other problem with PoS.  The whole rise in price of most PoS coins was due to their limited distribution period where people bought and hoarded them because they felt like they were getting in on a limited time offer.  After the first few dumps that happened after the PoS phase started for coins, the dumps came earlier and earlier.  New PoS coins can't even sustain their pump to the end of their distribution stage anymore before being dumped as people try to get out while the getting is good.

Now you have a full PoS coin that basically does not allow people to get in on the limited distribution stage.  How are you going to market that?  

"Hey, we're full PoS!  The only way you can get it is to buy some from us!"
"Why do I want to buy it?"
"Because you need to get it while the price is still low!"
"Why?"
"Because our multipool is going to be buying it all up!"
"What are they doing with the UTC they buy?"
"...selling it to you, dear investor!"
"Why do I want it again?"
"So you can hold and sell it to other investors."
"This sounds like a pyramid scheme."

The point is that you still haven't created demand and now you've killed the only identity this coin has marketed for the past 5 months.  It's no longer a mineable asic-resistant coin, and there is a good chance transactions speeds are about to suffer.  You can't arb with it, you can't use it anywhere that other coins can't be used, and now you've shunned everyone that hadn't already been a part of the community.  The only way out is to cannibalize those within the community now as you buy and sell to one another.  

The statement's been put out there and I wouldn't take it back at this point, because looking flaky is only going to shake confidence even further.  But I really would have strongly advised against hopping on a bandwagon that has already passed.