welcome to Qatar, You can come without any hesitation
qatar is good country to live peacefully .
the rent you mention good enough for nice house.
about your kids don't worry there are so many school but
better check with them b4 you come.
I guess your husband may be a doctor so don't worry with the hospital . as i know it is also a good hospital in qatar even though i have never been there.
so you can come and join us.