I have no idea about a couple's pension,I got a single pension forecast before I came to the Phils and married. If there is a couple's pension, I don't know if this would be allowed, with me being married to a foreign wife and both of us living here in the Phils.
I'm afraid how much capital is required, depends upon your lifestyle - taking into account, any medical insurance for that 2 years - and laying aside emergency money to fly back to the UK if you needed to.
Just don't make the mistake of thinking everything is cheap, or you will soon spend up. You have to think in peso value - like I have learnt to do. Now I think, "oh, that's expensive", instead of converting to UK £s and thinking it's cheap.