100k seems like a great profit and does afford you a bit of wiggle room for any unforeseen issues or holding costs along the way...

That is too thin of a margin for that long of a disposition not including any unforeseen delays or additional expenses along the way.  

I've found here in FL that 40-50% is enough to cover expenses, taxes and unforeseen events.

We did bust our original time estimate by a little over a week but that was mainly due to unforeseen circumstances and learning that ALL the plumbing under the house needed to be replaced.

There really should be repair reserves to make sure there is money available for unforeseen repairs.

Is it possible that things could get real bad for some unforeseen economic catastrophy? 

And of course there is an exception in IRC §121(b)(5)(C)(ii)(III) if Andy had moved out for those 6 months "due to change of employment, health conditions, or such other unforeseen circumstances."

Not gunna lie...I'm a bit nervous about home ownership as well as being a landlord and preparing for Unforeseen expenses but I know I need to pull the trigger to get my business started.

The contractor will likely blame the delays on the unforeseen items, and deny any responsibility.

thats pretty awesome , i would suggest ( most of the gurus as well , suze foreman, clarke howard... ) it is pretty important to have close to one years expenses saved , in case no rent for 6 months during eviction , a new roof , any other unforeseen issue . if you buy a few more , you won't need to worry :)