It sounded like the team working on the loan wasn't motivated to close as the usual path on these situations is to find a solution with the sellers to get the loan done. 

Consider how that might effect the future sale of a property.The real estate agent or broker who is helping you buy a multi-family property should understand the pros and cons and help guide you through the process of where your money is best spent regarding washers/dryers.

I'm hoping to connect with a reliable CPA that I can build a relationship with to help me get on track with my tax returns but also someone that can provide sound advice as my business grows.

Sounds like you have a great base for real estate investing! 

Any other cost-effective strategies I could propose to the seller?

Market circumstances might change, even if your intention is to flip the property, so think about your choices in case your initial plan doesn't work out.Market Analysis: To verify your predictions on future appreciation, growth in the rental market, or the effect of renovations on property value, do a comprehensive analysis of the market.Time frame: Evaluate the opportunity cost of having your cash invested in a non-performing asset and be realistic about how long you're willing to wait for the property to turn a profit.Investing in a property with negative cash flow can be a calculated risk under the right circumstances, but it requires a higher level of due diligence, market insight, and financial planning.

They are not strict with tenants, they buy properties in tenant-friendly states/counties, and son on.I would bet you that if one of your RE 'friends' would come on here and show us their business practices, we would see a poorly run business.Anyway, never listen to the naysayers, it sounds like you are set up well and you're on this forum, which gives you a huge advantage.

Hi everyone, (I was not sure if I should post this in multi-family section or short term rental section, however, to me it sounds like a house hacking)Got a duplex recently where each unit has 3 bedroom/2 bath.

Sounds like the best plan.

This will have the same exact effect as your first plan.