Logan's Run REDUX

I'm planning to do a contemporary version of the cult film Logan's Run (1967) using SF rules. <br />
<br />
<b>Synopsis of alternate reality:</b><br />
-June 1988 : NASA starts the full scale Mars base simulation RETURN TO
EDEN in the Nevada desert. 200 scientists, technicians and support
personnel are sent into an underground complex covered by a
semi-spherical geodesic glass dome. The simulation is scheduled to last
2 years. The complex is self-sufficient and powered by a nuclear
reactor.<br />
<br />
-June 1989 : The hardline politics of Ronald Regan and Mickhail
Gorbatchev lead to an international nuclear crisis. Missiles are
launched and humanity is pretty much wiped out... Just before the end
the EDEN communication computers receive 1 terabite of compressed
information from NASA. After that total radio silence from the outside.<br />
<br />
-June 1990 : A full year after the nuclear holocaust the scientist
under the dome have rigged all the systems to continue working.
Programs have been put in place to perpetuate the human race until the
planet becomes clean. Every year an expedition is sent outside to
evaluate survival odds.<br />
<br />
-1995 : Scientific authorities determine that the irradiation is so
severe that human settlement outside the dome is impossible until year
2115. Laws are passed to limit life at age 40. At that point the
citizens must willfully submit to euthanesia. Because of the short
duration of life a majority of the population is more and more consumed
by the desire to experiment the pleasures of life instead of working.
Scientific research is scaled back to a few individuals who are
permitted to live longer outside the knowledge of the population. These
25 overseers (and their descendants) manage the destiny of the human
race over the next three 40-year generations.<br />
<br />
- 2099 : A survey team is sent out to evaluate levels of irradiation.
Crops are planted and harvested at the end of summer. Result : Just
above normal radiation levels. The overseers secretly start a 14 year
program to train 50 individuals to become the first settlers of New
Earth.<br />
<br />
- 2115 : The settlers are sent forth to establish a community outside the dome. Campaign begins at this point.<br />
<br />
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<b>Question 1 : </b>What level of technology have the human reached in 2115 under these conditions?<br />
<br />
<b>Question 2 : </b>What's your take on what is waiting for them outside?<br />
<br />
Tks in advance for your hints and suggestions !