(QuickBooks, Buildium, Quickens, Excel?

Excellent! 

I used to handle everything through MS excel and it was a nightmare.  

Welcome to BP.I'm a bit South of you in the greater Singapore area...I can't say that I would ever advocate buying locally in any of these countries for long term cash flow, especially when you have established RE contacts (family) back home...and more especially when you're going to be throwing enough USD around within a 36mo period to generate 10k/mo cash flow.That said, I don't work for one of the largest brands known to man nor do I give excellent TedTalks, so perhaps you know what you're doing after-all :)You're an asset here at BP and I'm sure others, along with myself, would be interested in hearing what you're doing there in Vietnam.  

Hello BiiggerPockets family my name is Miguel Santos I am a new member to this site and i would like to see if I can help anyone with remodeling or repairs of any kind to your properties, in Slidell Louisiana, New Orleans Louisiana and surrounding area's, I have an amazing staff that does excellent quality work, we do it all no job is to big or to small we can handle it.

It would also be great if this agent/broker has excellent, quality property management connections since this a long distance purchase.

A few particulars that may be relevant:1) I will not be occupying any of these units.2) I have enough cash to go up to 50% down on any of the places I'm currently considering, though I'd prefer to stick to a 20-30% downpayment.3) I have excellent credit. 

I had been looking for a way to track our portfolio's performance, but I couldn't find a single resource online to do so.I built a Google Sheets (aka Excel Online) table that keeps track of the following:Purchase Price and DateCapital ExpensesFull Mortgage Amortization Table for each propertyA separate table letting me keep track of prices (either manually entered, Zestimate, or Appraisals or BPOs when available) (I had this automatically pull data from Zillow for a while, but then it broke, I'm working on a new version that will fix this.)

The preferred return and waterfall hurdles can slide around, there is no "industry standard" so it is up to you to determine what the pref and splits should be to attract capital. 

As was pointed out in Christine Hrib Karpinski's excellent how-to book, you don't want your guests falling on their backsides (and keep in mind that some of them may have substantial backsides, so plan accordingly!).