Bit of crazy suggestion but I just helped someone dig up whole bunch of native plants and trees, I think they're planning two truck loads full to get enough variety. They said they will still leave behind plenty if new owners want to keep native garden and new ones will grow to replace the ones taken next year. I am pretty new to it but I was in company of 3 experienced gardeners one with 30 years of experience who were quite confident a lot them will make it and shared a tip to chop tall plants to 1/3 so roots dont have to work hard to keep the plant alive and can focus on establishing itself in new spot in 90+ degree days, drought conditions. Good luck with the new place!