You are going to need one of the longer versions of the stopper -- for this installation, at least a 5-track. (There are also a 6- and a 7-track.) The carz will stop just a few meters before the end of the stopper which will be on the tracks as you have it. (It's not long enough to merit the "Special," which is around 40 meters.) Other than that, I don't see any functional issues with this setup. You have not yet installed the TRC triggers, which will be necessary.
The TRC track connections (or are they just index marks?) are too close for comfort -- I'll typically use the 3-track like yours above for a two-track 90-degree crossing.
:B~)