it totally depends on what PR your attacking,
what your base pr is, and what race your attacking, aswell as the empire you are attacking; pesonall habits...
but thats quite good tho :),
may i suggest putting destoryers in there, garuda`s n fswords are great :),
and then all i suggest is switching the ships round, switching destoryers, puting tyrs in there, hercs, nivs, pthors, and large runners :)...
but just play around, and if your winning most of your battles, then your doing great :),
of corse your have to abdapt to new pr fighting, as your go up the rankings board, but if your winning then your doing great :),
Regards GalacticKiller,