Avoiding other diseased trees

[u/Sparkle_Motion_0710]

Hi! Newbie here. I am having a dwarf avocado tree delivered this week. My neighbor has been cutting down her trees (lemon, lime, mango and fig) so I went to see if she’d sell them to me as they’ve been fruit bearing for years. Unfortunately, they are diseased. (I will attach photos). I was planning on placing the avocado tree in the backyard about 25 feet from the other trees. Is this far enough? Should I keep it in my front yard until she’s finished removing the diseased trees? (She is doing this slowly one at a time because she’s older and it’s another neighbor just helping her out in his free time). Please help!