Trolling motor is a must and highly recommend one with I pilot so you can use remote to control vs having to be glued to the trolling motor. It is well worth the money vs wishing you had it later.
Planer boards are needed, you can start with 2 and eventually end up with 6. Make sure you get a Left and Right don’t just grab two off the shelf. Kicker motors are nice for trolling umbrella rigs but not needed, I troll with a 225 2-stroke so your 4-stroke will be just fine. Trolling plate could slow you down but IMO it is not needed.
You have a fish finder but a key to striper fishing is knowing how to use it. Study, study, study your graph, the difference of having a bad day and a good day or a good day and a great day is being able to understand your graph. Just marking the fish is one thing, but understanding what the marks mean and the relation of the marks and the fish’s movement can mean a lot on many days.
Hook, weight and line size is more preference than a rule. Whoever shows you the most and you catch fish that day is probably what you will end up using forever because you know it works.
I use 20# main line 17# Pline halo floro for leader 1/0 Gamagatzu live shiner hook with 3 oz weight for down rods and 1/2 oz on planer boards. Stripers move throughout the season so being at the right place at the right time is catching stripers. It is much easier to understand stripers in summer months than it is in winter months because 90% of them are condensed in a several mile stretch vs all over the lake. Plus technique changes as well for winter months.
Hiring a guide or at least going with someone who does it a lot before you get started will save you a lot of money and headaches.