Carefully analyze potential deals, understand the local market, and factor in all the costs involved.

I feel that I am analyzing deals well in terms of price, downpayment, rents, cashflow, etc...

And what resources/websites do you like use to analyze a market for things like: job growth, population growth, unemployment rates, crime rate, what big companies/firms are there/moving in, etc.? 

He analyzes each student's deals, walks prospective purchases with students and continues to look over their project from rehab through the sale.

Before I purchased my SFH I was looking into multiple areas in Maricopa County for small multi-family properties, analyzed a ton and found a few good areas to be in to get the best return on your investment.I'll message you, happy to discuss what I've found!

What needs to be analyzed or good rule of thumb to get properties with seller financing?

Your business plan is based on the perfect storm as jay mentions and if there is the tiniest crack it will all come crashing downIt appears there has been zero risk analyzed in this business plan.

I have been using it to analyze potential deals.

BiggerPockets also has a calculator you can use to analyze deals and I highly recommend you start this as soon as possible, even if you are not ready to buy.

I am using Dave Meyer's 10% Target spreadsheet to analyze our first deal(s), and I love it.