the 250k mark is the top of middle class, not the start of rich. Obama has even said as much, that heavier taxation wouldn't kick in until 7 figures.
I'm not sure i agree with you on real versus on paper income for those small business owners. Even a very modest accountant will know enough to shield income and assets that are used for the operation of a small business. Good accountants like MittBot has are going to make your tax rate 17% or less.
To the point about the rich person hiring a beneficial person, you just indicted the Bush tax cuts as a waste of time. A rich person isn't going to wait for a Bush tax cut to make a hiring decision. That is the absurdity of supply side economics as the modern Republicans have envisioned them. This last depression cut a huge swath through the middle class but did nothing to really hurt the richest of the rich. Giving them more money isn't going to help things as much as MittBot and Ryan want to convince you otherwise. It has NEVER worked that way in history and there are multiple eras where it has been tried. Arguably a payroll tax reduction does spur hiring because it makes the cost of having an employee cheaper. So the only real impact on the owners than are wages and possible benefits. Which in theory would be paid for by increased sales or more sprockets produced, or more 'X' being done. Taxes wouldn't be recovered in the same way.
If 250K is the top of the middle class, but not the start of the rich, what are the people from 250K-999K? How can heavier taxation not kick in until $1MM if the tax cuts for earnings from $250K to $999K are going away? Multiple dems have said multiple times that they want to raise taxes on the rich by doing away with the tax cuts above $250K.
On the paper vs. actual income for small business owners, I know it's there because I've seen it on multiple tax returns. Also, your statement on MittBot having a 17% tax rate has nothing to do with small business owners. MittBot is driving his down with a large percentage of his income being taxed at a lower capital gains tax. This has a much, much smaller affect on small business owners. I agree with some of what you said on the Bush tax cuts, but they were needed at the time to get people spending again. That's a different issue than why they are around now (buying votes, neither side wanted a deal made prior to the election). Back to my original statement, if you want to raise taxes on them because you think they need to pay more taxes, fine. You can think that. The only thing is you can't say "they have millions, they'll pay for their people anyway" because that's not how they think. Are keeping the Bush tax cuts a good, long term plan for employeement, no. Will there be no negative effect if they expire because "those guys have millions, they'll pay anyway", no. There will be a short term affect. Also, you missed the biggest impact on small business owners, rising healthcare costs.