This. My next step after extract was 3 gallon BIAB in my 5 gallon pot that I used for extract. All I bought was a bag from wilserbrewer, a custom maker of polyester voile bags. So for less than $30 I switched to all grain.
https://biabbags.webs.com/
I used it many many times and it is still good, I just purchased a second larger bag for 5 gallon batches.
https://biabbags.webs.com/
I used it many many times and it is still good, I just purchased a second larger bag for 5 gallon batches.