Personally I can't see this working.As Stew mentioned the amount of GTR's being detailed on DW suggests that it doesn't work and some of the before pics are horrendous.
I was just about to say KW do a air lift kit for their coilovers.Be prepared to pay though,I was quoted over 2k to add the kit to the front of my KW3's.
Personally I think you have spent all that cash having it installed and mapped I would not be thinking of saving a few quid rigging up heaters for your bottles.
Get the proper kit.
Sorry mate I've not.Best speak to CS or Chilli Red.
I'd recommend the one I have if it had not gone through the roof price wise.Got mine for £750,think they go for about £1200 now due to the crappy exchange rate.