Jon, first take the physical to see where you stand.
If you stand ok, then I would say take the CSS job, because the older you get the harder it is to lift those boxes or whatever. BUT, a pencil you can lift, and learn the keyboard, it will make your life easier as you tenderly age !!
Good luck, if you make it in, one thing to watch out for, we're hitting up RC all the time for 'in the box' vacations, Waidmannsheil, Dom.