I'm not a miner. If I would like to invest in this coin, when do you think would be the best time?
Now or after the PoW phase?
Get in now at a semi-stable price or wait and see if miners dump after PoW finishes. A lot of it hedges on how the transition to PoS goes. I'm not going to give advice, just going to say the transition is going to be the make/break on this IMO, and leave it to you to weigh the poss cost/benefit.