I put the laptop at about 45º on its edge so the solvent could flow down, and then when doing the separation it was much easier to get the card between the metal plate and the batteries with the laptop case completely vertical. The double sided mounting tape on the battery is really aggressive and the rubberised compound quite annoying to remove the last traces off the metal plate. You will need a generous amount of solvent on a cleaning cloth or paper to remove the last of the adhesive.
I did it in reverse order for the last two cells, as it was easier to see the metal plate and get the card in between without going near the keyboard cable, then i had easier access for the last cell without any risk to the keyboard cable.
This cable is quite stiff and felt very resistant to being pulled out - I gently shaped a small bread tag piece of plastic in to a hook that would gently and evenly pull the cable back without tilting it to one side or the other. It is also a pain getting it back in when replacing the logic board - very stiff. Be patient.
be gentle - lever under each edge of the connector - you may have to do one side then the other , but the connectors come out easily enough
With most parts, its easier to leave the screws in the holes parts they come off with, and have small containers or a layout to do this with so each major part does not get mixed up - too many similar but different screws!
leave the cable stuck to the fan