It's up to you mate. I just suggest 1.7c because that should cover your brokerage costs for a break-even exit.
If you really just want your money back safe, then probably just take the 1.6c price and accept the $20-30 of brokerage that you spent buying in and selling out.
Edit: just saw the sell queue... looks like you'd need to actually sell for 1.4/1.5 to get out at the moment. buyers not coming to the party just yet.