I know credit and years of income play a massive role when getting approved for a loan, but for the FHA specifically is there any other requirements I should be attending too before I go to get approved ?

Is it common to have a relatively low risk asset or asset group that is cash flowing from the beginning and end up with a massive tax liability? 

Well currently I am not yet old enough to invest but within the next couple of years I'd like to start with duplexes and four plexes increasing to the massive 100 unit complexes

There is a lot of money to be made in D or F areas, clearly it can show the greatest returns, but if you do not buy right, rent right, and manage strongly, these can be a massive money pit.

and Lendinghome has one.for bigger portfolios and those that can take on massive underwriting requirements  corevest and colony have product.

Warren Buffet often quotes that. 

Be very careful because a prohibited transaction can result in massive penalties.

Their marketing is incredible and they have the potential to be a great company, yet until they make some massive management changes and get their operations under control they will continue the downward slide. 

When I looked into it further I realized there were massive barriers to entry that stop most people from investing.

I've already seen massive growth in my rental rates and property valuations along I-75 over the past 5 years.