Deranged Pineapple

A little backstory:
Before I get the "throw out the dead platform ECU and get a haltech" comments, I'll preface this by saying that I have a 10th Anniversary that I'd like to be easily reversible to stock when needed, so a full harness swap is not ideal for me and this is the best supported PnP S4 ECU. In any case, this car was purchased July 2022, and it came with the SAFC, FCD and big injector combo, except that the SAFC was fried so the car was running stock ECU tune with big injectors netting me 8mpg on a good week (I granny drive as much as possible during commuting to save gas, and maybe do a pull once every couple of weeks). The car is going to be an OEM++ build, so I'm not planning on adding a huge turbo in the future. My goal for this car is to hit the 250HP-300HP area, but not at the expense of reliability, so please let me know if this isn't feasible, but my previous research concluded that this is very possible on the stock fuel pump with upgraded injectors. The car is currently in storage until end of march, and the stock ECU is still inside.

My setup:
1988 S4 T2
- Adaptronic eMod009
- Stock ignition, coils, MAF, MAP, etc.
- Running platinum 9s and 7s for plugs.
- FMIC
- 3in straight pipe single exit
- Stock turbo (non ported WG, boost seems to top out at around 15psi on a cold day)
- GSL-SE 680cc (195500-0900 orange top) on secondaries (I'm 90% sure its on primaries too, but I'd have to double check, lets suppose it is though)
- Stock fuel pump
- AEM Wideband connected either 0-5v or Serial
- Airpump and AC delete
- Running 91 Pump gas in canada (so I think its 91 AKI)

I've watched the HPA videos on rotary tuning and I'm fairly adept with the Eugene software, but I just don't feel comfortable touching anything ignition map related as I don't want to pop my motor especially at the high boost levels the non ported stock turbo provides (also the spark plug placement is slightly different on the S4 housings compared to the later models and it makes me uneasy). This car is a daily driver that isn't driven too hard or beaten on, maybe a pull or two once every couple weeks so I'm not aiming for anything high power as I'm enjoying the stock ECU map with the oversized injectors and FCD but the foul smell and 8MPG is getting annoying. As of now, reliability is just my biggest factor for this map. I've looked at a couple of maps from the included Adaptronic basemap, to the haltech 13b terminated harness basemap as well as LinkECU basemap's, all of which differ greatly in ignition maps for seemingly the same exact engine? I'm very new to tuning and understand the basics of tuning, just don't trust my skills enough yet to make a 14psi highway pull on my own tune, and there's no rotary tuner within a couple hours of where I live, so I have to settle with empty street self tuning. Let me know if I missed anything. If anyone would like to help me out, it'd be a huge help!

Cheers!