I am a bit curious why you're asking our advice? You obviously got a very good deal on this 'salvaged' Tesla. You know that it will cost $xxxx.xx to get it certified by Tesla so that you have all the rights and benefits as a Tesla purchased vehicle. That amount, whatever it may be, when added to what you paid, is likely less than buying a used vehicle directly from Tesla. So, why be so rattled on your impending trip? You know you could be cut off by Tesla at any time, and rightfully so. So, how much is peace of mind worth to you? Clearly, if you like living on the edge - just assume you'll lose SuperCharger access on this trip and plan accordingly with the necessary adapters needed for the trip. Otherwise, pay the fee to get it certified and be part of this wonderful family called Tesla. Right now, you are on your own. Pay the bucks and enjoy the ride and all the upgrades that our coming our way... Certification is well worth it... That should have been your question... Have a great trip...