Are people really buying a keyset that will arrive 6 months later to make a $40 profit?
If that. They'll have to compete with the vendors who bought extras. Best thing to do imo is to sit on it for a while.
Thirty something percent profit in 6 months still comfortably beats the stock market, especially since extras will be at least $160, so you can easily sell at $150 assuming you don't want to wait longer (Metropolis extras are still available at $185).
But remember Serika? It was a great set that people had to skip because they went all in on Laser. Some of the sets now that are barely making MOQ are going to be sleeper hits like Taro or Serika were, and may have a very low number of extras (assuming a vender didn't have to buy it out).
Olivia is a great set, but as far as investments its middling at best.