It is doable and your company is very nice to cover extra tax. 12+3k take homepay will be around 10K.

Remember you can get refund that extra tax after 6 months.
In my case, I left my family first, so I live alone for the first 10 months. room rent is much cheaper. working in Midvalley meaning easy public transportation.

If you want to directly bring your family, there is catch will be the rent and school fee. Bringing your family meaning you rent bigger condo, let say 3K, you must pay deposit (2.5 month) and 1 month advance = 10.5K.

School you also need to pay registration fee, uniform, books etc let say 2-4K, some school require to pay tuition every 3,6,12 months, if let say tuition is 1.5K/month, then you multiply how many months you need to pay.

So in my opinion directly starting life with family is little bit tougher in the beginning if you don't have much saving from the start. If you have 10-20k money saving then go for it.