I don’t think we have topped at all. We are 2% off of all time highs even with today’s decline.
The broader market (SPY) has been in a range all year mostly between 204 and 212, with the majority of the time spent between 209 & 212. However because it’s not going straight up like it has over the past 6 years, everyone is getting worried. That is a 4% range for most of the year!
As a sidenote, watch the VIX, as it moves inverse, lately in the 12-15 range or so. You mention consensus, but this even means that the premium sellers aren’t even demanding high option prices. As you know most options expire worthless, and the market makers wouldn’t take that risk selling them if they thought a big decline was likely.
Is it possible we get an October like selloff back down to the 200 or 198 level? Yes, of course. And that may even be a good thing that will kickstart the next leg up. Keep in mind that that would still only be a 5% decline from here.
We have gone from a market where everything melts up to a market where rotation into stronger stocks is key as the indexes are flat. My main advice would be to buy quality companies first.
If you want to hedge with LEAP Puts, one option is to go fairly far out of the money, essentially buying insurance against a major market crash, which is probably likely to lose 100%. Even March 2016 175 puts cost about 2.70 today, thats a lot to pay for insurance against a crash. I think this is a bad idea and would be a drag on portfolio returns.
I think a better idea is to go a month or 2 out and find something a few % out of the money that you buy on an upday so you don’t pay a huge time premium, and then sell a lower put strike on a different day to create a vertical spread. That way you have protection to the downside, but you limit your costs and have less of a drag on your portfolio. Of course you should be familiar with spreads first before doing this.
My thoughts are that it’s not worth risking any capital to hedge against a decline right now. Markets are still in the range they have been in all year. After the run we have had, that is to be expected. If you can structure capital light option hedges with spreads, that can help with more peace of mind, but if that’s not your thing, just buy the quality companies, don’t risk money you may need in the immediate future and trust that your analysis on those companies is sound before you invest. Sometimes having the capital to pick them up on the cheap works as well… I think thats called a Texas hedge 
Good luck and hope this post isn’t too off topic for the board