I've no information on the 10A MTroniks units, but we have had a number of customers who've encountered problems with the Viper15A ESCs when used with a mixer - and that apparently includes using them with MTroniks' own mixer. The ACTion P40C requires a separate battery for each motor and a third battery for the receiver, so I wouldn't recommend it for use with these particular speed controllers in this model.
Just as a matter of interest, how big is the Revell Landing Craft and what size are the motors? There may be an alternative installation

FLJ