Good work, have been doing this to all of my other cars. I usually start to change these fluids at around the 12000mile mark.
FYI: about the first hand pump that did not work for you. The reason is that this particular pump can only be used with these "gear oil bottles" I've had this mobil1 bottle. This is how i get the diff fluid to pump "up".
Also about the Trans filling. I get from Home Depot a 4ft clear hose. I run the hose from the engine bay/fire wall, down to the trans fill hole. Connect a fill funnel at the top of the hose. Then i just poor the trans oil....let gravity work for you.