Um, err against most other warfleets you are Liable to get a tonking if they choose full balanced fleets. however, with the Narn, I guess, use your Kabintak as a battering ram to smash through the enemy, right down the middle, flanked by support ships, and basically justbecoming a flying wedge, their is little style, panache, or even tactical thinking involved. You "could" keep the G'Vrahn seperate and whilst sending your battering ram forward, loop it round to smash into the flanks. Also a concentrated e-mine salvo from these ships should be able to move a target or two, probably a battle, or even war ship could be taken out. I wouldn't fire off the long range ones first, wait till they are all in range (that said, your longrange ones reload anyway) with the e-mine power you have, your opponent will be forced to keep his ships spread, allowing you to isolate to some extent the targets you want. Don't get hung up on taking out the biggest ship, unless you are sure you can, take out his smaller ships quickly to even the initiative issue somewhat, as for most of the game, you will be struggling to get good boresight shots.
EA, again you will struggle to get good targets early on, but long range sniping is your friend, good Triple damage beams, you should be able to wittle your enemy down quickly, assuming you survive. concentrate your missiles ship to ship to get rid of them quickly, make sure they die, don't take chances and assume one ship will do it. their is nothing more annoying than a ship having 1 crewman left with that big ole beam at his diposal! Again, you have the option of flanking with the Marathons speed and maneuvreability, the Delphi can support this too. Those delphis should be lighting up targets left right and centre for those missiles to slam home!