And the previous day "you may want to reconsider that offer, they've just upgraded all these items..." having to do with my awesome, yet embarrassing, offer.  

If the appraisal, comp, etc justify the higher price, and if the property you are closing on appraised for 463k and it's a fair appraisal and you plan to hold it while it appreciates then sell later, you might be worrying unnecessarily.If you really want to back out of the deal, read the purchase contract to see what you'll lose if you back out RIGHT NOW --- If all you'll give up is your earnest money --- you might want to reconsider the purchase?

If not, reconsider who is representing you.Finally, I assume you are using a local standardized contract.  

@Derrick SnearlI would seriously reconsider investing out of state turnkey.  

I'm really reconsidering based on income per month may or may not be worth the liability/hassle.

The more contingencies you add, the more likely they are going to be to reconsider working with you at all. 

If I need to replace 2 heat pumps out of the gate, my numbers drop and I need to reconsider.

in particular made me somewhat uneasy and reconsider the temptation to jump into a cash flowing property.

However, if you were going to refi and buy several properties I would reconsider doing the cash out refi and extend to 30 years.  

If you're negative by more than market rent, you might want to reconsider, but there are still times where it'd be a good investment despite the negative cashflow (rent appreciation, appreciation, etc).