Thank you all for all the great information. As a new drone owner, I am definitely nieve and uneducated. Maybe, I should have asked the question as...Which one is a better failsafe for a new user, GPS or WiFI? Which I think has been answered, GPS. If I lose GPS, I have to be able to fly the bird manually to safe landing. If I lose WiFi, Solo should RTM unscathed as long as I have my settings correct (RTH height). I will be learning to fly manually as I go but would to keep as much safety features in place as possible.
When I purchased this drone, I had envisioned taking it out to the backyard and flying it around. After a bit of research, I have realized how powerful this drone can be and that it is my responsibility to be in total control. So now, my new vision is to have my Solo be a gateway into the world of drones for me. Learn to fly in the country and hope that as my skills grow, so that I will be able to utilize the power of this drone more and more. I would love to be able to use it for photography purposes where houses people maybe present. Some day!
Thanks again for all the insight.