I play a lot of WSS and would like to extend that into the Jacobite risings of '15 and '19. (One of the most intriguing possibilities arises from an anticipated Swedish expedition that never came through.)

What mix of the ECW Scots would I use for Highland clans? Does ECW-24, Highlanders, include any muskets, or would I have to use ECW-22, lowland muskets, to include them? I'm guessing the use of pikemen such as ECW-21 is out. 

ECW-33, Scots mounted officers, looks like a good source for building a slightly irregular looking cavalry squadron or two.