Good luck on your search , and welcome to the club! I bought my 150 in June and have been doing the same thing. Let me suggest one thing: Long range tanks sound good in theory, but depending on how you run yours and your density altitude, I think you’ll find full standard tanks will get you 3.5+ hours of run time with a safety margin, and a 150 gets really cramped when you fly legs that long. Extended range tanks usually mean you have little or no useful load left for a passenger or baggage/safety gear, food, water, oil, etc.
Let me also strongly suggest ADSB IN & out. Even just a portable Sentry makes a big difference safety wise IMHO.
Just something to consider in your search.
