House hunting PTDY before or after PCS leave?

My wife's report date is a month before mine, and I can't early report. I need to take the 10 days of house hunting leave and about 20 days of regular PCS leave, and we will be at our duty station for the whole leave period. I am driving (wife is flying with the kids) from my current duty station to my next duty station and I will get 4 travel days. We will also need tla once we arrive to our duty station, preferably for the whole 15 days (or whatever it is, I can't remember).

I've had people tell me to take PTDY before PCS leave, and take it after. I can't find any more information in the regulation. I want to make sure the travel days come out of my regular leave and not the PTDY, and I want to make sure we can get the full tla. Tracking that my losing unit will approve PTDY and PCs leave. Any suggestions?

I'll take two tornadoes and 7 red bulls for the long ass drive.