I think yes if you're going to use your bike as race one. And the best option in your case will be a single remote for both fork and shock - see last 3 or 4 pages of this thread, there were some posts about it.
+1 to this. My 936 and my Norco Revolver FS are both set up for Marathon racing, both using the RockShox TwistLoc remote. One thing that can be guaranteed over the course of an XCM or multi-day stage marathon, is that you will have some long, as in several Kms continuous, steady-state climbs or flat sections. Being able to lock out & conserve energy that would otherwise be negated through (even the best setup) suspension bob, giving you that extra little reserve that the other guy may not have. Of course, there's the "race-winning sprint to the line" that all the marketing types will hype up, but it is another useful example of the lockout.
I can honestly say that having the ability to lock out the suspension was an absolute game-changer for races like Breck Epic, which starts a few of its days with several Kms long paved climbs out of town. Not cycling through the suspension, and subsequently expending that energy made for a much more efficient climb, and a slightly easier day... nothing really easy when the race
start is nearly 2 miles/3,000M above sea level!!!
NOTE: If you do decide to run suspension with a remote lockout, pay attention to what the default/"remote unlocked" vs suspension default is. Example: Santa Cruz Blur TR uses Fox F&R units paired to a TwistLoc. The default for the suspension is Locked when the TwistLoc is released, where the Twistloc is designed to be used with suspension that defaults to Open. A broken Twistloc resulted in a completely rigid bike for 2/3 of the longest day of Breck... which included 6.5Km of rocky, technical descending. A simple change to a lever-style lockout switch got things going again, but it is something to be aware of when building up your bike. Check, double-check, and re-check again, that all your parts play well together.