One of the advantages of the 96mm battery is that it can enable you to be a little bit more creative with your whole electronics install and thus gives you a bit more freedom to tune your weight displacement as you see fit.
This is my install - as I ran it at Taplow. It took an TC racer with OCD to figure it out for me cos he hated the long motor wires.
It might look a little bit unconventional for a buggy - but hey, 3 years ago most of us thought the motor looked weird when that was placed in front of the rear axles and now look at us
Not only does it allow the wiring to be a little neater, it also gives a little bit more space laterally because the front of the chassis is narrowed slightly by the front bulkhead / servo mount brace and it's tricky to fit the castle MMP and the Spektrum receiver side by side although even that is possible as my 2nd photo will hopefully demonstrate. I took this on during the initial build to show that the MMP would fit underneath the bodyshell - even with the fan installed.
Anyway - hope this helps.
Andy