Puddy_Tat
naturally fluffy
Crystal Palace to Shoreditch/Moorgate
not sure there's an easy route.
quite possibly stating the obvious, but -
going to shoreditch, orange line trains start at crystal palace so there would probably be good chance of getting a seat, but coming back might be yuk.
assuming the place is walkable from shoreditch high street, at least you won't be doing the change on to the underground thing at one of the major terminus stations.
overground is larger trains than the 'tube' so may not be so bad (mum-tat is faintly claustrophobic and will do 'sub surface' big underground lines but not the 'deep tube' ones. obviously this may or may not be an issue in your case.)
does reading / having whatever the digital equivalent of a walkperson is help distract from the whole thing?
would they be flexible on hours? on odd occasions when i don't work a standard day, commuting to do (say) 7 to 3 or 10 to 6 is a whole lot less crap than doing a rigid 9-5
is it the sort of job where you can work from home at least some of the week? or work X hours a week over 4 days or something?
if bus is ok but trains aren't, then probably 363 then change to 78 (goes up Bishopsgate to Shoreditch) somewhere round peckham, or to 21 (goes through Moorgate) on the old kent road would do it, but for various traffic reasons, london's buses have got bloody slow in recent years.
tfl journey planner allows you to plan from door to door with address or postcode, and you can select things like fewest changes, or step free, or exclude the underground or whatever
gut feeling is - providing doing the interview isn't going to cost too much time off / emotional energy - then keep your options open and go for the interview and see what happens next.
hope it goes well.