Whipple on a 6.2 help needed

Alright, I'm pulling my hair out over this. It's the first time I've done forced induction, and it's not gone the best so far. The truck is a 2009 Escalade with a 2.3L Whipple. I've attached the latest log and tune file (and scanner config). I have been doing some reading at my time allows, and managed to fix some things, like the ETC scalar for the 102mm TB. Let me go through some of the issues I'm seeing (some of these are inevitably of my own doing).

1. Let me start with this: I have a wideband (an LM-1) hooked up and it's logging, however I have it hooked to the exhaust outlet with the venturi attachment. I have a feeling that I need to put it into one of the upstream ports because I think I'm getting bad data from reversion and because it is after the cats. If I'm going to put it into one of the upstream ports, which one and what do I do with the sensor that it will be replacing while I tune? I ended up creating a user defined auxiliary because when I checked the LM-1 output reading versus what HP Tuners was seeing, it was off by 1 or more. With the config I have, it's within .1 now.

2. It's idling, but the timing is all over the place presumably because it is hunting. With the AC running, it's worse.

3. I have turned off dynamic airflow (at least I think I did), and despite my sincerest efforts to go into PE below 2000 RPM, it didn't seem to care. Commanded AFR was staying at 14.13 no matter what. Now, it's going into PE on a "whenever it feels like it" basis. I know that there is something that is throwing it around. I've set the Open Loop Gas (Gear), OL IVT, and Airflow Gain tables to 1 across the board. Flex fuel is disabled, and I changed Stoich AFR to be 1.413 instead of 14.66 that is was before.

4. It likes to lurch forward if I take my foot off the brake, but I think that has to do with the idle being off.

5. Injector banks sometimes match, and sometimes they don't.

6. Sometimes the o2 sensors cycle like they should, sometimes they go lean and don't move at all.

7. Stabilitrak likes to throw an error under load, and has progressed to going off when I lift my foot off the pedal after being in boost.

8. I was having an issue where the g/cyl was going above the stock 1.36 on the spark tables, so I re-scaled it to go up to 2.00. Did I do something wrong with that?

Any advice would be welcome. I know when I'm over my head, and I'm certainly there now. There's so much to read, and between my work and our farm, there's minimal time.

Thank you in advance for reading this.