I would not use the red fill cap locking tab. If used it will prevent you from running the dip stick down the tube in the future when you want to check your fluid unless you break the tab again. There might be a way to remove that tab without breaking it, but that is just another hassle to a job that should be a simple straight forward check the fluid level procedure. Simple reinsert the top cap and skip the locking tab.
Also the electrical connector may not work properly. Just slip the o-rings off the connector supplied with the kit and put them onto the electrical connector that is currently inserted into your transmission.
Those are minor things; That's a good kit go for it.
For more info as to the electrical connector see posts 12 & 15 and o-ring replacement in this post: new vice old electrical connector on transmission