Looking for opinions

[Forrest Atkinson]

so I am relatively new to the site and I love following the stories.

My father and I are looking to help make him some extra money so he can retire early as well as set me up for the future. I am 24 with 2 rentals already and he just has a ton of land and a home. We have discussed the options of buying rentals or buying and flipping. I am a full time licensed realtor in Alabama and have full faith in market knowledge and such. 

Need input on whether to go with more rentals or to try and flip some together( I have done one myself). How do I explain the benefits of one with him being able to understand the logic behind it.

Thanks,