I'll leave the house plans to those who know, but I spent a month in singapore a couple of years ago, and toyed with moving their last year. I loved it mainly because shoes were so cheap
The main problem would be Mr Lyndon keeping himself occupied, even if you are earning enough to support you both - it's very hard to get a work permit and lots of ex-pats leave because their other half is bored. Because Singapore is so small it can be a bit claustrophobic and the people I know out there have to travel every couple of months to prevent going stir crazy.
If you have children the schools can be a problem; the local ones are very tough, and designed to make little robots who are easily managed. The international ones are extremely expensive, and most ex-pat packages won't cover the full cost. On the other hand, with a Philippino/Thai nanny the childminding is cheaper, but you have to deal with some problematic cultural differences, many due to their lack of education.
There is a big Irish scene out there, GAA club etc, think it's called the Singapore Lions GAA club.
Alcohol is very expensive, but eating out not so, depending on where you choose to go - i.e. local or western style.
A good website is
www.singaporeexpats.com. Have a good read, especially of the forums; it really opens your eyes to some of the things you can expect, especially in terms of attitudes among other ex-pats.
I think accommodation can be a problem, appartments to rent in nice areas are very expensive and there are strict controls on who is allowed to buy a property, even among natives (there is a scale of who is allowed and who isn't - a single person must be over 35 i think and cannot buy more than 1-bed appartment, rules like that).
Make sure your relocation package covers as much as possible; e.g. 20% salary supplement for agreeing to go, accommodation allowance, car allowance (cars are double the price if you want to buy one than here, to control the numbers on the roads), health insurance, cost of flights home a couple of times a year. Check whether you are liable to pay local taxes on your earnings.
You are in a great location for travelling Asia though, and the entire cultural experience is great. It didn't suit me or my company for me to go, but I would have loved it.