Zombie FAS
Personally I've been using the build below throughout 1.4 and now, in 1.5, its even more effective. It's built for assassination / alpha damage but I use everywhere, leaning on the beams more when sustain is required i.e RES/CZ farming. Beams while closing/pressuring target, ram and bam with frags. B modules are to add as much mass as possible, carried with A thrusters for boost speed & maximised ram potential, and I've noticed a considerable decrease in module malfunctions since swapping them inplace of A modules
(the rebuy is also a tad cheaper!). Point Defence to mock torp spam. Drops preeeeeetty much everything in very quickly, reliably.
Of course, you need to get used to taking damage -- your hull is considerably stronger than any existing shield setup versus alpha damage, though obviously it doesn't regenerate sp you need to account for this with your flying style. You can fly safely on 10-20%, if you avoid 4 m.torps hitting you and even then, on 20% you can still crawl out alıve. Of course, with 2 PD you don't get hit by 4 torps.
The plan, as mentioned above, is to close in, using the FAS's superior cap and relative agility to keep the beam lasers firing and on target. Then you go for the ram to drop their shield, if needs, and finish off with an ugly frag cannon & beam frenzy. If the target has their shields up you'll sometimes notice you take a chunk of damage during the ram but be assured that you've weakned their shields. Once their shields are down, you have the advantage.
If they're in a viper or something nippy and/ agile then you'll likely miss the ram, so we hug them, beaming away until their shields drop and then frag frag frag. If they run, ram and bam again.
Or for small ships, you can kick back and see they get RSI before your hull drops into the danger zone.
Full-Metal FAS http://coriolis.io/outfit/federal_assault_ship/26B6A5B5B6B4B4C1t1t0r7h000003032d2d2b292727.Iw18cQ==.Aw18cQ==