Our 2013 Escape has the self opening/self closing rear. It also has a function that lets you change stopping height.Ha! Well, if electric linear actuators do have limit switches, then they would certainly then be a good choice. The car probably has gas springs in it right now. I was impressed by how well the air cylinders opened the doors on the 2 cars I observed, they both worked extremely smoothly with no clunking. Considering that they were on cars made in the 70's and were still working very well was very impressive.
Either way it will be a fun project. I wanted or need a project that will engage me heavily and present me with some challenges. Next will be to investigate how other gull wing cars support their doors. Such as, how do Deloreans do it? I'm going to research all the gull wing cars I can. There are also the new self-opening SUV rear hatches. Those hatches are about the same weight and they seem to open in a very controlled fashion. I'll want to investigate how those doors are actuated also.