Try one thing, explain your situation to your current employer, ask him to get a 3 month business visa for you here, then u go back to dubai, and again come back with a new visa, then after your children finish their school there, cancel that visa and arrange for ur and family visa here from your company, companies can do that easily, only they should be willing to do that, otherwise you have to wait for your rp then get them on visit visa, keep them for 6 months and then convert into their visas to rp in 6 months time with ur salary statement etc, but mind it now ur salary should be min 10k for family visa in doha