Unless you're planning to run FFS (Livescope) a single Exide Nautilus 27 MDP (Marine dual-purpose) will power it all, and last through 2 days of pretty hard core fishing.
My jonboat rig has one, and it provides starting power for a 35hp outboard, a 12v 50# MK Power drive trolling motor, Lowrance X5 LCR, a livewell pump, bilge pump, and navigation lights.
Typically after a reasonably hard day of fishing I still have 70% charge remaining.