So not only are you raising taxes on close to half the people, and a lot of businesses, you're stripping Social Security and Medicare from people who are getting it? Yeah, I'd say your plan has a great chance of passing. </sarcasm>
Here's my position: if you've spent decades paying SS and Medicare taxes, then it's not welfare. I realize people may disagree with me, and offer well-reasoned responses as to why SS and Medicare for people who paid into them for decades are really welfare -- but screw them and their arguments.
When I say "welfare" I am purely and simply talking about payments to people who have not worked and paid taxes to a level anywhere close to the benefits they receive.