GunnerLumpy - is that Gunner or Lumpy to your friends?
Firstly welcome to the Cervelo forum - you've only made 3 posts to date, but from my perspective you're making a lot of sense and obviously have a passion for cycling (which is great!).
Here is a quote from the Q&A section of the Cervelo website (can be found under the Company tab of the website):
"Many consumers, as well as bicycle shops, believe that every fork has a
maximum allowable steerer height but the truth is that most do not have
such a limit. Our aluminum steerered Wolf TT and light weight steel
steerered Wolf CL models are examples of forks that do not have a
maximum steerer heights. You can run as many headsets spacers as you
need. Please keep in mind however steerer length isn't the only way to
achieve higher handlebars. Flipping over a -8, -17, -20 degree stem
will get you more handlebar height without excess steerer and spacers.
This option saves weight and often times looks more aesthetically
pleasing to the eye than a drop stem with numerous spacers."
Seems to me that your 30mm of stack height (looks like 30mm of spacers from your picture post plus another 15mm for the top cap of the headset) is absolutely fine.
Unfortunately, there is quite a lot of scare-mongering going on with this sort of thing - mainly the result of the Wolf SL recall (that fork had an all carbon steerer tube verses Steel for the Wolf CL). I had mine recalled, the recall notice is on the website if you are interested, and although the 3T replacement is very nice I still rate the looks of the Wolf fork. Have no idea if the 3T is more aero (probably - as it was designed after the Wolf). Anyway, the bottom line is - go out and enjoy your SLT and don't let anyone put you down or make you feel crappy!
Having a Cervelo should be a pleasure and a joy and at the end of the day, whether I'm out on my '07 R3 or hybrid commuter bike or 1980's steel monstrosity (which gets sneered at by the LBS, but has kept me cycling for 22 years since I built it up when I was 15) it's just great to go out and have fun on the bike. So, keep at it!