best AFR gauge setup

So I like the Innovate motorsports gauge, because you can daisy chain one of their SSDI 4 channel interfaces with the gauge. I wanted to data log, but don’t have $5000 for Racepak. I wanted to be able to log rpm, drive shaft rpm,AFR,throttle position. Which still leaves one more channel I can use for some other data. Total cost $650. $250 for AFR gauge, $100 for the SSDI 4 channel interface. $120 for 8 magnet split collar. $25 for Cherry Hall effect sensor. $80 for their pocket logger. $25 for a 2003 Nissan 350Z throttle position sensor. I do have MSD. 6AL to pull engine rpm off of that goes directly to the SSDI interface. The software is not as user friendly as Racepak, but it will do a bunch. It does NOT have the processor speed to do shock data, but honestly most systems don’t without a serious upgrade. The only crappy graph picture I have. Oopps just saw you can’t log, never mind