I don’t look at anything close to 100 houses In person or even online that is not what I do in fact I no longer even go inside the house I put an offer in and no longer have any inspection nor contingencies.  

If the tenant stays past the term of their lease they would be what’s known as a “Holdover Tenant”.You can research online about how to handle a holdover tenant.You may end up having to evict them and also file a separate suit for damages/cost of not being able to move into your new home - like staying in a hotel or having to put your belongings in storage.Another option could be “Cash for Keys” where you or the current owner agree to give $1,000 (or some other amount) for the tenant to sign a legal agreement stating they will move out by X date.

Steve, the current owner, has said they replaced the roof 4 years ago, which is good, but I can't find any evidence of this online thru the county website, in fact, Steve isnt the registered owner, but im guessing he is doing his wife's bidding perhaps.

You can also find some free calculators online.

Then we saw on line that the agent re-listed the property after we canceled for 675k. 

From the classic developer saying "Don't tell any neighbors, the meetings are online so the neighbors won't even know!"

Now obviously there are quite a few people out there that have youtube channels revolving around wholesaling etc and dedicate their whole online brand to teaching this.

@Samantha Lotti I wouldn’t say I found a mentor but I started attending online rei groups… thanks to COVID

.#2 Never trust online portals for values.   

It is a given that you've been online looking at homes but do get the financing lined up, FHA loan, before you get too invested in the home shopping.