I went down the DP chip road, so far Ive found I have great power with the chip on 10
but It'll blow heaps of black smoke, so I backed it off to 7 for towing duties still good
power, then I tried it on 5 but in my case found 7 worked best on my motor ,

You should be able to strip most of the system out IMO
the tank should have a valve to turn gas off and keep things safe.
I cant see any problems arising just take your time. I was going to
fit this D-gas system to mine years ago, but couldn't justify the bang for buck
Chip is fine on the Dis and a re-map seems to have great benefits on the CRD