500k is idealist.
But 55ksat/MNE really isn't that hard. That's a 10 fold increase in price, and yet a market cap still under 1 million $.
With good marketing entering the top 20 / 2M$cap isn't impossible.
And here the budget for it is huge.

High demand with marketing.
Low supply due to (hopefully) cleaver and patient investor.
==> Munnie !

Advise: hold minimum 50% until the mobile app is out.