I would encourage you to learn the market you plan to invest in now and to continue to learn about the different methods of investing.

What are the best sources or methods you use to accurately set rental rates in your area?

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

Heck, you process debit cards if you insist for 1/10th the cost and non-reversible. 

Are there any methods you want to stick with?

I have a 6-figure land business & am just here to help (no affiliate links).The best land investing program I have seen is Jonathon Haveles with The Land Method and Land Riches Blueprint. 

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

They have a total of 2 posts both defending the subject company, guru, method, etc.4.

Still use paper method for mileage logs.Tried QuickBooks several years ago but it was more complicated and I did not need the bells and whistles.

It’s also important to be as specific as possible in the scope of work for each line item—clear details can save you from misunderstandings or unexpected costs later on.I specialize in consulting services for situations just like this, helping clients work confidently with contractors by bridging the knowledge gap.