Wyches it is. I played some practice games over the weekend, and the wyches performed better than the reavers. So, that decides it.
I would love nothing more than to take three Ravagers, as I'm a huge advocate on filling all three heavy slots with the little beauties. Unfortunately, the tournament I will be attending has a fairly strict comp system, and taking more than two of one choice in any force org. slot with the exception of troops will dock comp. I'm trying to go perfect comp, so there goes my third Ravager. Also, there's a certain percentage that is allowed in each slot, so 3 or even 2 Haemis will dock me comp. I don't really see putting in just one haemi in the list.
Thanks to you all for the ideas, and I will let you know how the list performs.