You take the $ amount of imports x 10% (tariff increase). That is the amount that the tariff increase will generate.
And then that's the amount that you reduce income taxes by.
Any decrease in the tariff due to a fall in the amount of imports would be more than offset by the increased American incomes, when people change their buying habits.
Your import related business would suck, but America would be far better off, if you were in the food stamp line instead of the 100 million Americans there now.
Identify the assumptions that you are making in your last comment, and you too can be an economist.
And then you subtract out the higher domestic prices your new tax will cause, how many jobs will that cost?