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I have a couple of Jos A Banks Trios (suit plus an extra pair of slacks) that should meet several of your criteria. They usually go on sale for about $250.
Linky --- I'd suggest black or navy to start.
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I think the suit you're wearing in your avatar would work.
As far as OP, I only have one thing to say -
MAKE SURE THE COLLAR OF YOUR SHIRT IS COMFORTABLE WHEN BUTTONED UP.
Seems like salesman measure you and give you that size. Don't be afraid to go 1/2" bigger and try it. You'll be wearing that suit all day, so make sure you're comfortable.