Hey, your money ... your choice on rod holders. There are several different ones, and only you can determine which would work best for you.

14' rods would likely be a good starting point for rod length. And 4 rods is a good number to start with, just to see if you can "get into it".

You'll likely need to get a extendable net, also. The EGO Reach net is pretty popular amongst the spider rigging crowd.

Trolling motor ... one with infinite speed adjustment will perform better for you than a 5 speed selectable. And you'd best have GPS capabilities, either on your depth finder or a hand held unit, just to gauge your speed & keep it constant.

... cp