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Yes you can get a family reunion visa but first you need to come here and find a place to live so that you can invite them.
You will get a 2 year visa and your spouse will get a work permit.
You just need to have one blocked account, rest is fine. I would also suggest you to look for schoolboy geta once you arrive here. After they arrive immediately sign up to get child support as every child is entitled to get child support irrespective of nationality.