The 7 man bodyguard is worthless, anyone who takes it shouldn't play Tau. Hiding a 3 man crisis suit team can be challenging at times, but hiding an 8 man crisis suit team is damn near impossible. Farsight list strengths are in the free bonding for every squad. That saves a large amount of points. As for your list a few things are off. First you are required to have 1 crisis suit team with farsight. Second your bodyguards are 5 points more, and finally your hammerhead is 5 points less.
I really don't find mounted firewarrior teams to be cost effective in farsight list. I realize their power, but they're so expensive that they detract from your firepower. If I were to recreate the list it would look like this:
HQ
Farsight
170pts
Shas'O: Plasma, Fusion, Shield Generator, HW Multi, Stimulant Injector
142pts
ELITES
6x Stealth Suits
180pts
Monat Crisis Suit: Team Leader, Plasma, Fusion, Targeting Array, HW Multi
77pts
Monat Crisis Suit: Team Leader, Plasma, Fusion, Targeting Array, HW Multi
77pts
TROOPS
12x Firewarriors: Shas'ui, Markerlight, HW Drone Controller, 2x Marker Drones
200pts
12x Firewarriors: Shas'ui, Markerlight, HW Drone Controller, 2x Marker Drones
200pts
HEAVY SUPPORT
Hammerhead: Railgun, Burst Cannons, Multi, Target Lock, Disruption Pod, Decoy Launchers
175pts
Broadside: Team Leader, Advanced Stabilization System, HW Drone Controller, 2x Shield drones
115pts
2x Sniper Drone Teams
160pts
TOTAL: 1496
You keep the same number of markerlights, but now you have 6 networked ones, 2 of which hit on 3's. The Monat Crisis suits can still work together, but one suit will draw fire from an entire sqaud, they also take care of your crisis suit requirment. The Shas'O has some added survivability and should hang out with Farsight, shooting and charging sqauds. The Broadside has some added survivability, which is always a plus for antitank units. Sniper drones will add some nice punch agaist power armor and are great at supporting firewarrior teams.