I do use this burner on my 25 gallon kettle, it delivers a lot of heat! It eats through propane pretty quickly though so it really depends on how big your kettles are because banjo also makes a smaller burner like this, a bg12 I believe.
I didn't research heat shields when I got this and just...
https://www.brewhardware.com/product_p/rims.htm
This is a great website! The RIMS tube they offer uses tri clamps on both sides so the RIMS tube can be taken apart and cleaned. No more not being able to see the inside of the RIMS tube!