I have pretty much the same setup with Eddy carb with vacuum can dizzy. Listen to buick Runner. Keep your CCC setup.
But just in case you decided to run the current setup, I use B&M lock-up kit, which is rather expensive (This one. https://www.summitracing.com/parts/bmm-70244
. Holy ^*&%! I bought this at around $150 or so, maybe 10 years ago? Must be that COVID..................). It has a speed sensor, so it's way better than the vacuum switch the cheaper one comes with. I have mine set at around 45 mph, so if the traffic is going around at that speed, it keeps going in and out of lock up, which at this point I usually turn the switch off until I go faster.
One last thing. Since you have Eddy carb, make sure your TV cable have correct geometry and adjusted correctly. If not, you'll fry your trans in no time.