Fixed blade. May try Magnus stingers. If you do decide to use mechanicals though, may try the smaller vortex head.
I agree with this post 100% allso , I have used the 2" 100 grain vortex heads for the last 2 years and they have not failed me , They allso make a 1 1/2" , and a 2 1/2" head all in 100 grains . My setup is very similar to yours . In the past I have used magnus heads with great sucess allso and the 4 blade 100 grain stingers would be my choice for hogs , or muzzys .