Is this Motor kit easy to install or will i need someone to do it for me?
Yes, there is not much to it. There will be instructions with the kit to help you.
So i guess all we need is the motor kit right?
To correct the problem you have with the washer now all you need is the motor kit.
It would be a good idea for you to take a look at the wax motor to make sure it's the new style one with the black plunger.
If it's not the new style wax motor I would replace the wax motor too.
It would be some cheap insurance.