Shorting SPX Against the Crowd Long Mentality

Shorting the major US stock index with Reward/Risk of 1.88. The trade is kind of unpopular recently, but I smell enthusiasm is reaching exuberated levels, a clear sign we are very close to a medium-term top. When there is nobody with gun powder to buy more we will enter a bearish spiral. Not sure how far it will go, but this target I set looks easily reachable in a month or two period.