dude who knows really ;\
my GUESS is we will have "profit dumpers" people happy with easy profit, maybe a few whales even, that sell around 0.0005-0.001-
big projects have "accumulation" stages after the initial dumps. that could be weeks, months, (years?)
when YOU get in and for what price you buy in at (and later sell at) is SOLELY dependent on
your own view on the length of maturity on investment with lisk
your own personal "sell price" (based on many personal factors.
what you plan on doing with your lisk after you buy it and b4 u sell it

so what price to buy in at? is 1.5btc enough?  
well that's up to you friend
O and the ICO price finished about 18.5k shatoshi per lisk if i remember right

good luck!