A tax account ensures nothing is accidentally spent elsewhere, and a marketing account makes sure lead generation is always prioritized.From a credit perspective, connecting credit cards to these accounts on autopay helps you manage spending responsibly while playing the credit game.

I get a dozen post cards a week! 

That is not true, if you start too early and lack experience and then have a deal go bad, it can set you back 5 to 10 years.

The problem is this time of the year does not have much turn and the units available are not representative of your true competition. 

Quote from @Zach Edelman: Are you planning to occupy the property as a 2nd home or as a true vacation home?

Screening tenants well and then a security deposit or credit card hold process in place will limit liability.

Is this true?

Your credit limit on an unused card will not generally affect your scores.

Why does this seem too good to be true? 

That said, I completely understand your concern about deals looking "too good to be true" when you’re putting in 50% down.To avoid this, it’s best to analyze properties as if you were using more traditional financing (20-25% down).