Need advice on trolling motor.

[team heat]

I have a 16 foot bluefin side console aluminum boat.It has a 40hp outboard on the back.I have a minnkota 55lb thrust saltwater riptide trolling motor on the transom.I have a 55lb thrust bow mounted trolling motor up front with copilot and autopilot.With both trolling motors on full speed i can do 3.2 mph.I want to replace the bow mounted 55lb thrust motor with a 112lb thrust 36 volt minnkota saltwater riptide with ipilot link.My question is is it worth the extra money to go with a 112lb thrust or should i go for the 24 volt 80lb thrust.I fish the Delaware river,Raritan bay,Barneget bay big freshwater resevoirs ahd all the smaller lakes.Not sure if the extra 32lbs of thrust will improve my boats preformance to justify the added cost.Any help would be appreciated.Thanks.Ps battery power is not an issue as i have 6 big batteries on board.