Looks good.
If you can keep it at around 1500-2000 tri's you should be ok. That is the average poly count for a Sins frigate.
FYI
Frigates, Cruisers, and Civilian craft 1500-2000 tri's. Some Sins frigates go over 3000, but you want to keep the count as low as possible.
Cap ships average 3000-4000 tri's (biggest sins cap i seen was around 4500).
Strike craft between 500-700
structures can go as high as 7000. In the starbase's case the advent starbase is a ridiculous 12000. Again the lower the count the better.
