I'll be surprised if we squeak out better than a D. Tactical seems to maul industrial costing. With the number of slots we have I think a less is more approach might be needed so we don't end up straight doubling our cost.
Something like
a) 100% coverage with 75% able to be hit with 2 phasers using 14 phasers
a2) 100% coverage with 50% able to be hit with 2 phasers using 10 phasers
a3) 88% coverage 38% hittable by 2 phasers using 8 phasers
b) forward facing torps: 2 dorsal + 2 ventral
b2) 3-1 split: 3 forward (2 dorsal) + 1 ventral aft
b3) 2-1 Top split: 2 forward, 1 aft all dorsal.
Something like
a) 100% coverage with 75% able to be hit with 2 phasers using 14 phasers
a2) 100% coverage with 50% able to be hit with 2 phasers using 10 phasers
a3) 88% coverage 38% hittable by 2 phasers using 8 phasers
b) forward facing torps: 2 dorsal + 2 ventral
b2) 3-1 split: 3 forward (2 dorsal) + 1 ventral aft
b3) 2-1 Top split: 2 forward, 1 aft all dorsal.