I'm Ray, and I'm new to the forum and hoping to get some guidance, sorry for such a long post.

This afternoon I was offered a job in Singapore. The role will be Sales Manager of an Oil and Gas service company. The company is based on the west coast and I'd be initially managing a small team of local Sales Engineers and travelling often around Asia-Pacific.
If we go for the move, there will be my wife and I, plus our two year old Daughter relocating from Scotland.
I'm weighing up the offer on the basis that this will be our sole income. My wife intends to work, as she does now, but can't quantify this until such time as she begins work.
The package on offer is as follows:
Salary $150k
Performance Based Bonus $25k
Fuel Allowance $6k
Comprehensive Health Insurance for the 3 of us.
Mob/demob airfares from/to Scotland
2 months accommodation whilst home hunting
This would equate to a monthly income, after tax, of around S$13,400
I've reviewed a lot of information on this site, and many others, to put together a budget and try to establish if we'd have a comfortable lifestyle:
Rent: $5,000pm - Nice, but not overly lavish, 3 bedroom condo in districts 5, 21, 22 or 23. Jurong is a possibility. Shared pool / facilities. Near MRT.
Car Lease with insurance: $1,800pm - Standard saloon, company requirement to have a car.
Playgroup / Nursery: $700pm - Based this on website for 'My First Skool'. No requirement for westernised curriculum etc.
Petrol / Parking / Toll Charges: $600pm
Groceries - $500pm - Would aim to cook at home 4-5 nights a week.
Holiday / Short Breaks - $500pm - We would aim to explore more of South East Asia, probably making use of budget airlines / mid-priced hotels.
Socialising - $400pm - We're both in our early to mid 30's, but neither of us are party animals since becoming parents.
Annual airfares to return home - $350pm put aside
Gas / Water / Electric - $300pm
Clothing / Activities / General Goods for little one - $200pm
Eating out - $200pm - Hawker stands / food courts with somewhere a bit fancier once in a while.
Cable TV - $60pm - Cartoons and EPL games required
Broadband - $50pm
Mobile Phone for my wife - $35pm
Home Contents Insurance - $50pm
Leftover at the end of each month would be approximately $2,600 (20% of take-home pay) as 'disposable' income, and any savings / investments / one-off purchases would have to come from that.
Based on your experiences of Singapore, would it be possible for you to advise on the following?
Is the package on offer on the low side for my circumstances and for such a role in Singapore? I am 33 at present and have 16 years’ experience, 8 of which were in similar roles. It is comparable to my current package in Scotland pre-tax and much better post-tax (23% uplift). If we take the plunge and move, it will be for the experience, rather than for money, but it would be good if the deal on offer is fair. Although I feel that this is an opening offer with some room for negotiating, I also don't want to come off as greedy and blow it.
Is my budget realistic, or have I under/over-estimated anything? Unless my wife works, we might be slightly stretched, but less so than we might be if she were to stop working in Scotland.
Thanks in advance for your help.
