Dude, you really can’t leave anything out of the list, especially for later pay offs.
The Barbara Hambly Trilogy is VERY important: Children of the Jedi, Darksaber, Planet of Twilight. So many important characters get screen time, and we get some hutt action.
Then Crystal Star as fallout, and also the first time we are put behind the eyes of Jacen and Jaina.
Black Feet Crisis is really the only one that can probably be skipped because of some of its pointless plot, unless you want to watch a study of Leia’s leadership…and if you are a Lobot fan…I think that was Black Fleet crisis :P
New Rebellion is a good read, having my favorite R2 plot arc EVER.
Personally, I do not recommend skipping anything along the main plot timeline, ie. anything with the Holy Trinity. There is always something important in each book, and always fun to be had.