Brrrr in declining market

[Aleksander Dabrowski]

Might it be a mistake to purchase a property with plans to brrrr if you anticipate a market decline?

Have been studying and listening to the podcasts to get us pumped to go and we have committed to doing our first deal this year. I've been toying with the calculators and reading here every Chance I have and loving it all because I feel more ready daily. just trying to get past the hurdle of the fear of the first deal and keep coming up with this nagging question with all the talk of a potential bubble. 

Let's assume there will be a decline, though I doubt to 2008 levels. Would the brrrr calculator lead to a good enough purchase to cushion a decline? Would anyone suggest adding a cushion(lower offer price) to their analysis ? Am I just a newbie? Haha. Thanks in advance for the input.