What hours are you working that you don't care for? Honestly, if I were you with your background in Chemistry, forget about nights and go for research. That would be so amazing to be a part of something that brings a lot of good to mankind. I am involved in "Tyler's Team" which is in memory of nephew, Tyler, who passed away from Leukemia. All of the proceeds from the annual dinner, etc ($30,000)go directly to a wonderful researcher, Dr Barry Maurer (CHLA). He has done amazing things with the monies and it goes to research and nothing else.
When I started working nights my children were 7 and 10. So at the time, if they were home sick from school I would be able to "doze" (unless, of course, they were throwing up). As far as school functions (plays, teacher parent conf) I would catch up on sleep at some point. I'm not saying that it is easy, but worth a try. You are right about weekends, they are a little tough.
I am unemployeed at this time (three mos) and have an interview (Surgical and or Cardiac Telemetry) this Fri at Glendale Adventist in Glendale, CA (near the Rose Bowl) for nights and now I am starting to think otherwise (lol) after remembering that nights are tough. With this economy it has been tricky to find a job the last three months, so I may have to take what is offered. I also have other apps out there and am waiting for a call backs on two of them specifically. My goal is to end up in ICU then possibly on to be a Nurse Anesthetist.
Previously, I worked at LACUSC Medical Center in Los Angeles ($38.00?) in the OR (3yrs experience and is my second career), I left there for a night Charge position at a Hosp. in Pasadena, CA and was making $42 per hr. At the time our neighbors were under major construction (honestly I could not sleep during the day even with earplugs, there was so much noise) I had to resign after requesting days. The position is very difficult to fill and they did not want people flip-flopping back and forth.
Good Luck with your interview. Let me know how it goes!!!!!