That seems kinda steep it sounds like they are selling you more than you need. A long arm lift is generally for more extreme off road use,
Honestly to run 35s with mostly street use a 2" Mopar or Dynatrac lift with wheels and tires is more than enough IMO.
Here are the reasons the ESS will not stop, see 2019 owners manual page 343.
• Driver’s seat belt is not buckled.
• Driver’s door is not closed.
• Battery temperature is too warm or cold. (I get the "Battery Protection Mode" message after a long drive on a warm day)
• Battery charge is low.