Does anyone have any experience using their coil converted L322 to tow anything with a heavy tongue weight?

I use my 2011 L322 to tow a dump trailer, and often use it to the tongue weight capacity.

With the air suspension one doesn't notice the heavy tongue weight as the air suspension corrects it.

I am considering an Arnott Coil Spring Conversion Kit:
https://arnott.mycarparts.com/items/C-2989

What is the ride like on the springs?

Does the car land up with it's nose up in the air looking like someone has overloaded the back?

Are these coil springs going to be durable for towing?

I can't decide between spending 4.5k on replacing all the air struts for coils, or spending 3.5k replacing just the two front struts. I am airing towards the coil replacement to eliminate an (10k) additional cost of other things going wrong, compressor, rear struts, height sensors, valve block etc. etc.

As a sidenote: I am also curious what people think about re-sale value of L322s with coil conversion kits? I feel like less people are going to think negatively about lack of air.

Thank you in advance


My rig (before the front bags went out!)