There is no reason not to do the first thing on the list and stop there, it would have hardly any impact on the country's finances. The only purpose of taxing you that I can see is to keep you enslaved and beholden to your paedophile overlords. They need your labour to grow their capital. If you are taxed less you'd have more money to invest, to do things like start businesses, take risks, to innovate, come up with new ideas, to unleash the benefits of capitalism for yourself. Never happening.
However, what will most definitely have an impact on the country's finances is if you do most of the other things on your list which will only make enemies of the top 10% of earners. Those people will just go to heathrow, get on a plane, and leave you behind, holding a big bag of debt that will destroy your life and your great grandchildren's lives too.