Xrecode3 will do everything you want in one go... if you're lucky! Its DTS encoder works for some, not for others – not for me, so I use SurCode CD Pro DTS.
If you're going the one-pass route, drag your ISO into Xrecode3 and it will display the track details. Click the box next to the TWOCHTOC block of tracks to de-select them, leaving only the MULCHTOC tracks selected.
Select the output as DTS, then click on its tools icon to change the 'Output Settings'. If you don't have SurCode, select 'Use FFmpeg'. For burning to a CD, you'll want to change the 'Sample Rate' setting to 44100.
If you want the playback volume to be roughly the same as your ReplayGain-adjusted stereo tracks, tick the (badly-named) 'Normalize' box, then click its tools icon and select 'Apply to Audio' (first!) then select 'Use Loudness Normalization' (second). This uses an EBU-R128 multi-channel gain adjustment algorithm, modified so clipping is prevented on amplified tracks. (But then if you're still in the Dark Ages – playing optical discs!! – gain levelling probably won't mean much to you!)
Select the 'Encode' Action, nominate where you want the output files to be generated, then click the 'Start' button to start the conversion (it will take many minutes!).
But if you have SurCode, the method is similar to the above except that you select WAV for Output Format and set it for 44100/16-bit. For 'Action', select 'Split into file per channel'. This will generate a set of mono files, one per channel, for each track. Feed those into Surcode to encode to DTS-WAV, and burn those to a CD with your favourite burning software.
If you have problems doing any of this, let me know which method you're trying to follow and I'll do some screen-shots to make it a little clearer.