(particularly the bonded payments, don't fully understand what you mean there so maybe you could elaborate on that a bit). We first want to get the site up and running with some of the more basic features (invoicing for posts/comments, merit based tipping system, etc).
Pre BIP: Solving for spam and other abuse with an HTLB - Alistair Mann I think one of the replies in the thread suggests how lightning could be used, IIUC
I would suggest coming up with a comprehensive incentive scheme in case the site becomes popular. If you make small but significant changes, users will complain and sour the goodwill towards your management no matter how you handle it. Or hope you stay small until you make any significant changes, but you may not feel like changes are justifiied if the site doesn't catch on.