You did not mention if you plan to use a tactical compass or a regular compass. The information given so far is right on. You could simplify by using a tactical compass, though it hurts the pocketbook more.

If you use a tactical compass you will be setting the tacking angles for your boat. While on tactical mode the compass will give you the wind angle based on your sailing angle. If you can tack and get the same reading on both sides you have your tacking angle set right. Then while you are on a port tack if the number goes up you are sailing into a header. On Starboard the number will go down sailing into a header. For catamarans tack on headers of maybe 10 degrees or so, unless you are near the layline and need to make it.

Dan