Im considering it as the course includes a coach for 6 months and a complete program.

Make sure you connect with the NHREIA, great group, they have monthly meetings in Manchester and a busy FB group with 3500+ members.

Yes, I have done that several times, both as a buyer and as a seller.

Further, running a very quick and simple valuation based on $900 rents, 8% vacancy, 25% op exp margin, and a 9% cap rate, I'm coming up with an ARV of around $83k, so I'd pass if I were you unless you can get a much lower purchase price.

I've also used traditional loans through regional banks and a few SBA loans. 

Conventional financing requires that you have a SSN, Permanent Residency in the US, and a US credit score. 

I own 4 rental properties and a small strip mall in the Baltimore area

as a flipper, with the participation of a wholesaler and a hard money lender, what actions should I take BEFORE I close and buy a house (tell me step by step please because i dont really understand the sequence of events) and also please tell me when to do due diligence to make sure how much does it cost to renovate the house and is it worth buying this house?

For example, two of my goals are to achieve a certain percentage for my IRR (internal rate of return), and a certain % for my cash on cash return. 

Conveniently located in Bryan TX, within walking distance to A&M Bus stop and a short 5 minutes drive to College Station, home to the largest university in the state, Texas A&M.