Pass through dtmf tones to another node

Hello all,
I’m in the process of building my first allstar node. I’m going to make it out of 2 baofeng bf888s radios so I can transmit without getting locked out by waiting for a repeater to unkey etc etc. there was a nice write up about that from Chris hood. I’m not wanting it to transmit what it receives like a real repeater I just want to be able to talk if the transmitter is still keyed.
I believe I want it to be set to duplex 0 and yes… I still want the curticy tone and the id’s to work so if that’s not the right setting please let me know…next I’m wanting to build a node at my other house where my 70cm repeater is located and have it set to my repeaters frequency so I can monitor my repeater anywhere I’m at. It has a acc controller and a frequency agile remote base. I would like to send dtmf commands from my mobile node and send it to my home node which would transfer it to my repeater. I hope that makes sense. If anyone has done this please let me know what settings I need to change or add

I think duplex=3 is what you want for that.