Yes in hindsight we should of applied for the residency right away. I am sad we did not. You are all correct as whv cab have no dependants. The children and I are on a visitor visa independent of him. But we did talk to them and even sent his passport and details along with our applications. But with ask your concern I will have the letter from us and imigrations reply on hand passing through customs.
So it seems no one knows afor sure bout the tax deal. I calculated it out online, we just don't know if we need the length of stay or can apply on residency only.
So what is the timeline applying for a visa with lots of points and a job? Work visa would give us insurance, and resident would give us insurance and possible tax credit.