OK, this guy is very solid; but part of the reason I suggested him was because you had a bit of an "Anvil" for him to move with, that has slowly been remmoved from your list and I think you sould probably put it back (more to follow). Right now, I see him being used for Devination, and maybe Fortuning some Pathfinders and some guide use; but overall I think he would be more effective if he had something that couls stay close to him (more to follow).
Here is where I would get the stuff to go with Big-E. Exchange the DA for
(153) 10 Gaurdian Defenders with a Brightlance platform, and a Concealing Warlock with a Singing Spear.
(155) Avatar.
And here is the reasoning, Eldrad and Avatar are a serious issue for almost any enemy to deal with, and having 11 more guys around them only helps you. Not to mention that no-one will run (Fearless bubble), so your enemy has to kill all 11 guys before the BL stops firing. This may not appear to be a good CC unit; but believe me when I say that it can do a lot more than many players think. You also get another Scoring Unit with the Avatar, and it would sort out some of your Nid-zilla issues.
I don't have any issues with these guys, Unless you want to swap them for something else, which I don't think you need to.
Check your math, the FD's are 113pts, so there is where I got the extra point to pay for the Gaurdian Defender Squad I mentioned above (and 4pts to spare). I have never needed the Troupe Master in the Harlequin squad but others will swear by him. I would drop him and add a 6th Kiss just to save the 16pts (gives you 20pts to spare now - more on this below),
I would seriously like to get a Shuri-cannon to go with the Scatter Vyper so this is one more reason that I would drop the Troupe Master. So this would put you at only 10Pts left to use.
With that last 10pts, I would make both Falcons with Scatter and Shuri-cannon and you list would be evened out at 1850pts again. It would give you a little better early game shooting overall, and since you said that you wanted to be a little less CC aggressive, I feel it would be better in the long run.
Anyway, your tactics would change a little, in that the Avatar and Guardians provide the Anvil as their Fortuned and advancing with Eldrad. I truely suggest that you read up on both of these figures in your Codex as their combined effects are simpy "Gross". Everything else would work pretty well the same, except that now you will have the PF's and Vypers Harrassing/pinning, and the Falcon Squads working together to take out tanks and/or infantry squads in a piecemeal manner.
Here is a little note on some tactica for you.
T-1: Falcon with FD's moves forward (possible Tank-shocking) to get into advanced possition while the Falcon with Harlies moves up as well (possibly only 12" to maintain shooting options) but just to set up for the next turn.
T-2: Falcon with FD's now moves again to get FD's into position, after they dis-embark the FD's can still shoot the intended target (with their Falcon helping if needed). Meanwhile the other Falcon dis-embarks the Harlies before moving, it then moves to get between the intended target and the rest of the enemy army (to force LD tests for anyone wishing to shoot Harlies/FD's and maybe even forcing them to move around it in order to assault). The Harlies with their Move,fleet,assault (13-18") can now strike the unit that the FD's knocked out of their tank (Landraider with Termies), or simply assault whatever intended target is at hand.
Oh and don't forget that since your "Anvil" is moving forward during this, it is possible to actually get that part of the army working concurrently (as well as your harrasing elements) so that you effectively isolate one or two of the enemy units at a time to completely distroy them.
