Here is the build after a 100 mile shakedown. The vital stats are;
Caden 49 mm carbon wheels
28 mm Pirelli P Zero Race TLR tires with 24g TPU tubes
ZTTO 12 speed lightweight cassette 11-46
SRAM Rival AXS XPLR wireless mech
SRAM AXS POD 2 shifter
TRP Spyre mechanical disc calipers
Dura Ace TT brake levers
Shimano Alfine crankset w/42T chainring
I wanted to keep the cockpit minimal and as clean as possible. I got a deal on the Dura Ace TT brake levers. I got the pair for less than price of one of them new. Since I had been thinking of trying "reverse" levers for a while, when I got the deal, it seemed like the levers were destined for this bike.
Without standard levers, I needed to figure how and where to mount the shifter. The POD came with a flat bar mount. I designed and 3D printed an adapter for a standard brake lever mount just to get it on the bars. My plan is to design a custom mount, but for now this mount will do.
Now you might be asking why I didn't get the SRAM wireless blips. They are smaller and I could hide them under the bar tape, but there are 2 issues with the wireless blips.
First, the wireless blips can't communicate directly with the mechs. You need to have a primary SRAM wireless shifter, such as the brake levers, a blip box, or the POD. The blips then connect to the mech through the main shifter. So even if you want a clean handlebar setup, you'd still have to find a place on the bike to put the POD or a blip box.
Second, wireless blips are a sealed unit. You can't recharge them or replace the battery. Once the battery is dead, the best you can do is send them back to SRAM for recycling or, in the worst case, they go in the landfill. This is poor design and I can't abide. A pair of these little guys cost about $100 and you're likely to get 2-3 years out of them if you use them as your main shifter.
The Shimano Alfine crankset is a spare I had laying around. I put it on to get me going. Eventually I will switch to a Rotor Aldhu with a power meter.
By far the Caden wheels are the best part of the build. While you can get carbon aero wheels for less money than what Caden Wheels sells, what you can't get is the experience of talking on the phone with the owner of the company, who is the same person building your wheels. He took the time to actually call me and speak with me about my bike and riding style to make sure I was getting the right product. The wheels are well built and wonderfully smooth. The combination of the carbon damping effect and the suspension of the S30 makes the ride remarkably comfortable while being quite fast.
Speaking of speed, on my T50, the average speed on my typical training route is 17-19 mph. For the same effort, based on heart rate zone (mid zone 2 to low zone 3), my average on the S30 is 20-23 mph. A 3-4 mph increase in cruising speed is a game changer for me.