In my experience, those large cuts are normally due to findings during inspections from past potential buyers.

You should ask them if they have done wholesale deals before and represented different buyers, sellers and wholesalers.

Note that brokers are being bombarded with buyers, and having problems finding sellers. 

I wanted to get insight on how to market this home to find and attract the right kind of teant/buyers at this price point.

If you get the property tied-up and don't like the due diligence, think of the hard deposit as a "Lease Option" payment and try to JV or assign the contract to another buyer in the area. 

My question is: Since the contract is under addendum; can I market the house to potential buyers on my website and social media in case the first deal falls thru?

SFH more competition from first time home buyer and all cash buyers...

I am a first-time home buyer in a complicated situation.

May need help finding a buyer. 

When you get a house under contract (typically the hardest part, which would mean that you found a house that would meet an investor's criteria and the numbers made sense) you have to find a buyer for it.So you'll first have to send your signed contract to your attorney/title company so that they can do all of their work checking the title and whatnot.