Before you consider the package, just confirm you can get school places for your children. This is quite an issue in Doha at the moment. Also, you didn't mention if you package includes the cost of schooling. This can be expensive too.

Your housing allowance seems very light. At the moment you need to pay between 12-15 even 20k for a 4 bedroom place. Doha in the last few years has gone through the roof for rent prices. This doesn't look like easing off either.

In my opinion, you would need to get a decent commission for this package to be attractive.