Whether you paid 70p or £2 the future for this share is the same therefore why sell if you're at a loss but not if you're in profit?
Sell if you don't think they are going to be worth more in the future (or you think your money is better placed elsewhere) hold if you think these are a good bet.
What you paid is irrelevant. All IMHO of course.
Oh and if they're NOT producing by end of Dec then this managment will have ZERO cred with the city and us (I don't think you can have negative credibility but this lot'll be close)