yeah, my mistake on the War Walker comment. in only mentioned off handedly as i really wasn't sure what you could try to get for 105 pts.
TBH, after a better glance, i would upgrade the Serpent with 10 DA to have TL BL, drop the Serpent on the 5 man DA squad, and put that DA squad in the Falcon.
by dropping the three Holofields and that Serpent you could increase your DA Jetbikes and include two units of them, well kitted out with upgrades, giving you four scoring units in a 1k list.
any points left could be used to upgrade your Farseer some, and lastly, i would change out Bladestorm and the current gear on the DA Exarch for PW, Shimmershield and Defend.
and thanks for the rep, and back at you!
good hunting.