Well - Asking a single 2k generator to run an RV AC is asking a lot. Even with a hard start capacitor, it would max out what the generator produces. I have a Honda EU2000i and EU2000i Companion along with a hard start capacitor-that will run the AC. If you don't provide adequate power to the AC it could start (with a hard start capacitor) but run hard-and the strain might do bad things to the AC. Same as pulling too much from the generator. Your link to the soft start is currently down for maintenance. https://www.loveyourrv.com/installin...r-conditioner/
2012 FunFinder X 210UDS
4-68 watt flexible panels; 1-215 glass panel/4 Battle Born LiFePO4 Deep Cycle Batteries
2014 Ford F350 6.7 Liter PowerStroke V-8 Diesel longbed, SRW
Lots of discussions about this on rv.net -- and the results are mixed. It works for some folks and not for others, even with virtually identical equipment. I am reluctant to go to the trouble and expense of installing the starter kit without knowing if my Honda 2000 can do the job.