Personally I would run it as follows
as you have
but I would rather run in the other 5 slots
Tina (7/6 if ability activates and you never want to win every round.)
Nancy (7/5 with a possible 10 life gap)
Sledge (7/7 and hold its own against Nightmare which is a heavy Survivor clan)
Elvira (6/4 Soa is always helpful!)
The last slot can be filled by
Cliff (more Soa with a potent damage)
Gordon( another power heavy card if the courage can trigger!)
Glosh( If SOA clans are popping up more than you would like!)
The benefits to these changes will be great! Pastor and Slyde fill your roll of damage reducers. Kerry is a strong 6/6 who doesnt really need her ability but it always helps. Tina is predictable but a strong cheap card that couples well with damage reducers, She is the weakest to SOA. Nancy is hurt by SOA but not shut out as 7/5 is still strong, Sledge laughs at SOA and beats them down for 7. Elvira gives you SOA and because of bonus can still get a nice hit in (remember you arent going for KO's in survivor) Lastly the last three fill in as needed I like Cliff a lot a nice revenge SOA that pushes through Damage reducers for heavy damage!
Everythign comes down to your taste in the end! Hope to see you in Survivor soon!!!!