I was planning on taking my truck to a transmission shop and having them set up TV cable cause I'm sure I would mess up.
Be sure the "transmission" shop you choose has someone there who is familiar with work other than "remove and replacement" of stock parts. Like any other kinds of hotrodding, combining parts that didn't go together originally opens up a whole can of worms that most flat rate shops neither want to nor know how to deal with. The electronic control version of the 700 is the 4L60E- - - - -same basic gear train, but with electronic shift control instead of a mechanical cable. You'll need a stand-alone computer and a few sensors such as throttle position, manifold vacuum, RPM, etc. but there are dedicated aftermarket control systems to do that.
Jerry