These chords sound correct.
I’ve seen some posts saying to tune down half a step, but here’s a way to play it 
without doing so.

Here are the chord names (in order of occurrence)
Verse:
C#add6 - C#sus2(added 5th) - F - F#
C#sus2 - C#sus2(added 5th) - G#5

Ending:
F#5 - C#sus2(added 5th) - G#5


e|----444------------4444444444444444-|
B|----444------------4444444444444444-|
G|-6-6666---3333/111-6666668888888888-|
D|-6-6666344---------6666666666666666-|
A|-4-4444344---------4444446666666666-|
E|-6-6444122-------------444444444444-|
    ^
  break

For the rest of the song, when ever you play the first chords, replace the empty break 
an additional strum (the break is only meant for the beginning of the song)

Here's what I play for the ending

e|-2--444--444--444--222--444---444---444-|
B|-2--444--444--444--222--444---444---444-|
G|-6--666--888--888--666--666---888---888-|
D|-4--666--666--666--444--666---666---666-|
A|-4--444--666--666--444--444---666---666-|
E|-2--444--444--444--222--444---444---444-|

There's a bunch of random stuff they do at the end of most of the bars in the verse as 
which I decided not to tab out.