Hey there.

I think your map looks nice, visually, so this is definitely a style you can keep. As for the actual heights, the one thing that strikes me the most is the amount of inland basins that you have - by far too many places where the water will flow into a basin and create huge lakes. Over time these places either fill up with sediment and become plains or the water carves a way out of them so that the stop being closed basins.

I think a very quick pass in Wilbur would do wonders.