I will build 25 PBNs with niche related articles and Indexing
Yes, All private blog networks are permenent and so all your backlinks live forever.
Yes, I will provide you 20 private blog network with detail login for that and 20 gmail accounts. With that, you can easy edit your pbn when you want ... please check gig extra.
In basic gig, i don't provide that. I will use at least 05 images or videos for private blog network on extra gig. When you take an order with 2 extra gigs "Use 05 images or videos" + "20 pbn with detail login", you will recieve 20 pbns detail login and 20 images or videos for each.