I had a look at doing TFC-like (lagged) conc sounds in code. It's very tricky. However, it's pretty simple to just insert a bit of silence at the start of the timer wav file. You just need to work out how much silence you want (probably your TFC ping * 2, so for you raum about 180ms)
I've uploaded some examples here
https://dl.dropboxusercontent.com/u/...grentimers.zip
includes 90ms, 120ms, 150ms, 180ms, 210ms, 240ms which equates to 45 ping, 60 ping, 75 ping, 90 ping, 105 ping and 120 ping