Alright, so i am lvl 222 and have done all the kronyn line, and most of the zolazin line( up to vornexas taunt). and i was wondering what mission chains are suggested to do to get some good mods, ones worth while? i am trying to build a pvp ship. any suggestions?

The Lazuli Chain.

Starts with:
http://galaxylegion.com/wiki/index.php/A_Syndicate_Trap

Some one also suggested possible the malyrian line for hull mods?

Yes Mylarai, is a must for a pvper.

Mylarai and lazuli are both good ones for PVP, expect to be on Mylarai fora good while though as the hull mods are towards the @*S end of that one. you could also look at the Talitherian chain when you get up there as well. They have a few decent mods + a mission reward that is 1 helmsman for each defense mod on your ship at the time you get it.

Also forgot to mention the Prejor chain as well, the power diffusers arnt bad, and they are easily added onto a ship, + the exotic pulsars are a pretty nice space - attack weapon as well, size 5 attack 30 energy -10