More factors than I can list here; your due diligence process will take at least a month and you will uncover more things as you go down the list.  

I'm now researching methods to uncover my own deals (direct marketing etc.), but I'm curious to know what methods have been most effective for experienced rehabbers in the area.So do you: Use wholesalers?

Second, research...im sure most of your questions have already been asked so search the BP site or simply google what your looking for...Third, reach out to individuals....sent them a private message, or email them but make is simply and clear what your are looking for.Don't worry now about setting up an investment company....you most likely cannot own any RE in the US until you've moved and have some landed status so until then just read and learn whats out there....and finally you wont really know what you like and enjoy until you start getting your hands dirty....experience will uncover your treasure!

This is only what has been discovered thus far, who knows what else is hidden, or uncovered. 

After an inspection on a property some serious issues were uncovered that would of blown my set budget of 30K when I did the walk through before putting an offer on it.

If it's under the patio you need to uncover it.The previous owner knows where the tank is assuming they properly maintained it.

I'm ready to jump on some deals but can't for the life of me find a broker that is 1) an expert in the area 2) ready to work hard to uncover some great opportunities. 

It's a matter of effort uncovering deals and your budget.  

Once you really know what you want, then you can uncover a basic premise for the things you do/don't do.

There really is a lot to know and the earlier you can uncover everything, the more prepared you'll be!