Try to re-graft again or consider a Bridge?

This 57-year-old male was referred to me in order to extract two teeth — #7 and 10, complete any regeneration necessary, and place implants in the sites to be restored by the referring dentist. After extracting #7 and degranulating the area, I placed a resorbable collagen membrane on the palatal aspect and human demineralized freeze-dried bone, mineralized cortical bone were grafted into the socket. I did not a lay a flap. I placed a second resorbable collagen membrane over the graft and sutured it in place. Site #10 was a bit more complicated due to the fact there was an apical lesion which extended to the facial as well as the palatal defect, which was extremely large. Again both sites were grafted as before and membranes were placed. Postoperative healing was uneventful. The second CBVT was taken 8 months after the original procedure. Should I try to re-graft #10 as before but lay a palatal flap for the surgery? Or should I quit while I am ahead?