There are best practices on certain items that provides a guidelines.Commissions are always negotiable like any other services, you can shop around for the best value for money.All depends on the risks that you are willing to take.

Needs new everything floors, kitchen, bathroom, paint, roof, landscaping and also has termites and a tentant that's not currently paying rent, for a 1000 sqft property they want 160,000 for it, but my comps say for a rehabed house in similar sqft property in that zip code would sell at 220,000k and I would say it needs atleast 65,000 to 75,000k in repairs so my offer price was at 100,000 to 110,000 and the buyer will not entertain my offerI would like to offer more but if there are any surprises I'd like to be prepared for those cost during the rehab process.

Do you have cash to make repairs?

I’m in Ohio, so I can purchase a property with $40k cash out, invest $10k in repairs, and rent for a couple hundred above the monthly operating costs.

Quote from @Sean Spagnola: What renovations bring the highest after repair value?

In reality the owner probably gets to do and pay for the repairs as the tenant has no money for things like this. 

Not to the extent of uploading photos and explaining repairs (that's pretty cool) but running comps, estimating ARV, reasonable rehab budget, profitability, etc.  

FHA loans are really only best in lower credit and lower down payment situation. if you have the ability to do 5-10% I would do it. if you don't need money for repairs , you could do on the higher end 10%+ but if you do need money for repairs 5% could be good. some lenders will do recasts on loans and you cannot do recasts with FHA.

Fortunately, the Short Term Shop teaches you all of these things once you are under contract and through the inspection period.  

If you have any cap ex left in Palm Bay (like an HVAC major repair or roof) you will lose cash flow for years.