My short term goal after executing my initial plan is to purchase 2-3 properties per year to gain experience and supplement my income.

Once you think you have a solid plan then I would consider spending the money to have the professionals you listed review it and help you execute your final revised plan.

You just need an assignment agreement executed between you and your buyer.

While the previously executed deed from buyer back to seller may be invalid, the buyer could Now sign a deed back to the seller.  

One of them told me they have a policy to never do REPLY TO ALL on emails because of potential liabilities of replying to the wrong party.So now I am stressing out on not being able to execute this estoppel letter leading to not getting the loan, I have no financing contingency in the contract so I need to get the funds ready just in case the loan falls through. 

Rentals with no money in your pocket generally are a disaster waiting to happen- if you have to evict the tenants, or if something needs repair you may be SOLYou could also try to get a master lease agreement or an option on the property (I am not familiar and have never executed either of those strategies but someone with more experience may be able to guide you on that front)You could also find a partner who believes in your ability to run the deal as well as the deal itself to help you come up with the money and qualify for the debt. 

Second, if the lawyer is properly performing his/her role, s/he will advise the executer to take the route which will best benefit the estate and, consequently, the heirs themselves.

Here we manage maintenance risk through a thorough preventative maintenance system (I used to be the Street Maintenance Manager for the City of Lancaster, CA) and we shift risk through the lease-purchase by receiving a large non-fundable down payment and making the tenant/buyer responsible for all maintenance.We set the purchase option price at a premium of 18% since the tenant/buyer has 30 years to execute the option. 

Or will someone force me to execute the foreclosure?

Now it is time to execute i am getting cold feet as i literally dont know anything about Steelton.