I would first use a grain filler to level the surface. Then lightly sand with 220 grit sandpaper. If you have the means of spraying I would seal with a vinyl sealer. Then topcoat with a cab-acrylic sander.
If you are brushing or wiping a finish I would use a oil based polyurethane only.
I just made a mesquite table and used Arm r seal from Rocklers. I used a wool aplicator from home depot and it went on super easy and looks great. Havnt finished my house yet so havnt tested the table as far as durability.
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