Here's a few strategies that have helped me on my journey.

Some things to be mindful of are the added costs of having to facilitate delivery and acceptance of the windows if you are purchasing them yourself rather than go through a contractor who both supplies and installs the windows.

Let me know how I can help Andy!

You have really helped me make a better decision.

Hope this helps. 

Home Depot and Lowe's both have a very helpful Pro Services desk.

Maybe a local bank near the subject property would be willing to help.

Developing the tools to scale a substantial real estate portfolio would enable me to help people in a way I currently can not.Me: I'm an investor located in Denver, CO preparing to execute the BRRRR strategy in Cleveland or Columbus, OH (aiming to use about $30-40k of capital).

For our clients find and do the analysis on investments for clients saving them time all the while helping build a team to stabilize the property. 

I paid for a coaching program that helped me improve my fee structure and nearly doubled my annual income.Going it on your own has benefits, but look for help in the most important areas.