read a game save and extract the information needed for the whole calculator is well beyond my ability. but for the gathering you don't need much infomration in term of past decision. the most optimized run up to date is:
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you cannot avoid light damage at the end, for avoid any collateral you must give up most of the pan-succubus results.
the key point you must have are:
* esthera rp 100+
* Tak'Kan score 60+ if you had the orc research in chapter 4 completed, Tak'Kan 70+ otherwise.
* Orc Hidden Stats nearly Maxed (Sapience 8 [max 8], Magic 4+ [max 5], Attractiveness: 4+ [max 5])
* Don't lose any orcs in erosian invasion.
* Orcsphere
* Wynn Join
* Balia Locked
* Tower delving research at least started (better if completed, it leave you with a bit leeway in the race time/chests)
* all but one of: Nalili Locked, Chalice States 60+, Yhilin Final, New Givini 50+, Orri's restaurant and Eustrin Final.
* social 60+
* economy 100+
PS: if you lost at least one orc in erosia you must have Tak'Kan 70+ and orc research done for compensate.
for the best result this is mandatory. they are easy to check in your save.
if you talk with her in the ruins she said "Simon..." if you don't have triggered the scene, othewise she said "I'll always be ready for you!"
this should be easy to check, if you had the "simon..." reply you must exit in the pass map and return in the ruins.