I can see a nice spike on Finex to 520 in the next 6-12h

Mind telling us WHY you think so? It's as pointless as "5k USD by the end of this year!!111" OK, makes sense.
If Bitcoins turns into bull mode, things can escalate quickly

. Just look at the acceleration of the rise in the end of may.
Also those active 10k shorts on Finex and probably 20-40k in China might help a bit.