Just my tuppence worth, but I'd make the decision based on where the SSIA is invested. If it is primarily Irish stocks, I would cash in right now, because this country is going to be a basket case for the foreseeable future and the market gains to date may be overstating the prospects for recovery.
If, however, it is invested in Germany, China or UK, I would say hold onto it, as the recovery seems to be getting traction in these markets.
If US or Japan, it is 50:50.
Can you cash in 50% of your holdings only - this might be an option to you?