Guest mode is pretty cool once you get it setup.Super easy for Roku TV's and I won't have any other type of TV in the rentals. 

There are plenty of short term rehab loans available that will help with the initial purchase, give you rehab money, and don't have any type of prepayment penalties.

I agree with @Connor Hibbs's comment on terms for first time flippers and if this is something you want to start doing more frequently I'd look for lenders that offer some type of rewards program to gain better terms through doing repeat business.

We have a savings account where we split up into different buckets (from our w2 and passive income) and one bucket is for real estate and when we have enough to acquire another asset we will consider it.I am not a fan of borrowing 100% of the transaction costs including closing costs as it will be extremely difficult to make money many times on those types of deals.

Or hire a professional who specializes in selling this type of asset.

You are wise to limit your scope to a particular type of company.I have been in the industry for the past two decades, and from my years in the business, I can recommend a couple of other companies outside of my family. 

HOWEVER, very important to understand is that these 3 month seasoning products are VERY expensive.

First - I think your accountant should be providing you recommendations for cost segregation companies.It it most likely, if he/she works with real estate investors, that he/she would have a couple to recommend.Second - There are two types of cost segregation studies.Type 1 - Conducted by an engineering firm where an engineer will inspect the property.

Of course, for other types of businesses, or rentals in a partnership, accounting software like QBO, Xero, or Wave is still a necessity. 

What type of properties are you looking to add to your portfolio?