I would also recommend submuscular placement for the same reasons as most plastics surgeons on here. The implant coverage is superior and the complication rate lower. There is a rare person for whom recommend subglandular implants. I would recommend getting additional opinions if you are...
The trouble with vaping is the nicotine content. Nicotine dcreases blood flow and can reduce the healing potential of a fresh scar. It is best to avoid all nicotine products 4 weeks before and after surgery. This is what I ask of my patients.