According to the Genesis account Adam was 130 when they had their first child, so that sets the absolute limit of the delay between the creation of Adam and Eve at 129 years. That would put the latest date for the 6000-year anniversary of the creation of Eve at 2104. That would be 190 years after the Gentile Times ended in 1914 – quite a stretch.
One or the (many ) issues that Fred Franz never really properly addressed however, when compiling his Bible chronology, is the fact that 130 years sounds like a suspicious round number, as do many of the figures in Genesis. Any modern statistician would consider the fact that we are presented with so many round numbers as strong evidence that we are dealing with estimates or rounded up figures (setting aside the possibility that the numbers are not even intended to be taken literally at all) which cumulatively can lead to a fairly substantial margin of error. Franz’s answer to this objection was that he believed God wouldn’t have provided the figures if they could not be used to compile an accurate chronology. But this assumes he is correct that it was God’s intention that an accurate chronology could be derived from them, an assumption for which he doesn’t offer any support.
If I recall correctly, I think Franz also offered the suggestion that the errors in the rounded up figures probably cancel out. This would depend how you round up the numbers. If the numbers are rounded to the nearest ten then maybe they do largely cancel out. (134 and 126 are both rounded to 130) But if the numbers are rounded to the preceding ten that could build up to a substantial difference. (134 rounded to 130 but 126 rounded to 120) Even if the more accurate rounding method was used, that would still allow for an overall margin of error a number of years in total.