The correct brace height is found by starting at the minimum recommendation, shooting a bunch or arrowsand increasing the the number of twists in the string by usually 3 or 4 twists and shooting again(no silencers). Do thisall the way to the max brace height setting. What you are looking for is thesetting which is the quietest and has the least vibration (hand shock). There will be a "sweet" spot. Ihave found that it is usually near the upper brace height limit.

To correct the arrow flight, I highly recommend bare shaft testing. Usually aluminum are sensitive to the correct spine to your bow so there will be some testingand adjusting needed. I'd suggest you use the following link as a guide.

http://www.bowmaker.net/index2.htm

Also on the tab/glove: I also have sensitive fingers, but use a cordovan glove with nylon inserts. I have a hard time anchoringwith a tab. I also pluck more with a tab.