If the OP wants to make a highly competitive squad, then yes, he should probably have 3 main attackers. However, if he's just trying to make a squad to max out Mara, then this squad works well.
The Jawa/Garindan suggestion is an excellent one.
I'm not really convinced on the effectiveness of Jarael (especially without the TBSV), since a primary use of Jarael is to stun enemies, which you don't want to do in a Mara-focused squad. perhaps those 23 pts could be better spent elsewhere. Maybe a couple of Human or Twilek BGs, or else find a way to work in Bomo Greenbark (he's great with Wedge) with Wicket (Traps is a pain, and he dies easily to help Bomo).
If you end up sticking with Jarael (and therefore add the TBSV), I'd definitely find a way to add Kol Skywalker...for 38pts and GMA, he's an absolute beast. And yeah, that would give you 3 beats.
One other option, if Disruptive is important, you drop Lobot for Talon Karde, who also has Recon and Fringe Reserves (20, not 30)...and with Wedge he becomes a pretty reliable scrub-killer (mobile twin, and evade for when he uses Recon). That would mean dropping override, though. Anyway, you have a number of viable options--that is exactly why NR is one of my favorite factions.