Do we know for sure Molly/Luis and Evilen/David Spain actually got married this summer? I couldn't find any wedding announcements, but something tells me that might be prohibited by the TLC contract.
The upside of Molly/Luis is that she's less likely (but it's still possible) to get preggers now, so if it all falls apart, less lasting damage. It's going to be an uncomfortable senior (I'm assuming) year for Olivia, but she seems very bright and self-protective, so I think she will survive. Downside there is that she may feel very responsible for the younger sister, and what 17-y-o needs that?
I would assume that if Evilyn is biologically able to get pregnant, it will happen quickly; then that gets complicated. I wonder what the fascination with Virginia is; once outside of the DC suburbs, it's honestly not that different from NH and it still gets very cold, although it's also beautiful state with nice people. But still mostly rural with few international corporations outside of tobacco and textiles. There are many much warmer places where someone into international affairs like David Spain could work...universities, nonprofit think tanks, major corporations. I'm assuming there is Someone in VIrginia more interesting (maybe married)?. Atlanta, RDU/Charlotte, Houston/Dallas, or even colleges with respected international business schools where he could pick up work (LIke U of S. Carolina) seem more logical choices, and the cost of living much less. There are a wealth of recording studios in all these places (except maybe USC). I spent Jan-Mar in NH one year, and it was grim and lonely.