Ok, so you already have a SEST. I take it that the original engine that was matched to your present ECM was something like a stock 96.
The injector size for the 009SAY002 can be easily changed on the "Tuning Setup" tab page. Your looking for a "starting point map" correct.? When you think about it, how much does the actual compression RATIO change the VE of an engine. For the most part, VE is determine by throttle body, pipes, heads, CI of cylinders, cam, air cleaner etc.. I would not focus too much on the compression ratio since all your looking for is a "starting map" before an exhaust analyzer is used.
I may be mistaken, but I think you may have a problem loading a CVO like that to an ecm that presently has a base 96 engine in it. I could not when I tried it to my base 96. I only tried it once but it said it was a non-compatible file.