Buy all the same brand, finish, and model. 

I'm in the space owning apartment communities down in the metro Atlanta area so if you need help analyzing any deals I've built a financial model (example on my website) that I help investors underwrite deals all the time for free if you ever need any help.

Flipping is a J O B, one that requires time and expertise.

I have a contact in San Antonio and she is a part of BBVA Compass Bank Network   They work a lot with Foreign Nationals and must have some expertise in that arena.  

Build valuable experience with the model.

That wouldn't be a good deal obvious but want to make sure my model is correct.

Do either of you recommend a particular brand/model?

This is only after I've:Built relationships with numerous sponsorsLearned how to underwrite dealsGotten educated (and experienced) with both models (this is not free, dedicate at least $10k to your education)The value of your network and education in real estate cannot be understated!

There are lot of moving parts involved in the initial process of investing and I am looking for a proven model to follow.

There’s always a tag/ sticker on the boiler showing model and serial, snap a pic in the future and you’ll have all the details you need to price one out.