I understand just where you are coming from Billy , this old boy has been reluctant to sell the bike as there are the memories and emotions of two loved and obviously dearly missed family members tied up in the fabric of this machine . Yourself being a caring and loving person feel an affinity towards that and this my friend is to be applauded ! Personally , I would make the very best of the bike as it is now , changing nothing out of respect of the sellers memories . I would polish it , fettle it and make it the best it can be in regards to the memory that this old boy had of the bike . Then photograph it and maybe even take it around to show the old guy . That done , I would take it back home and then do what I wanted to do , namely restore it back to a sought after and valuable concourse machine thus ticking two boxes , namely , making an old man very happy and even for just a short valuable time restoring one or two cherished memories , and secondly finally ending up with a bike which will be part of your legacy , which your loved ones may even end up with in their living room with fond memories of you . On the other hand , they may just sell it to fund a nice holiday !
this is a sale / purchase based around a lot of emotion and it's a lovely thing that you have respect for that . Just my opinion !