How to finish building this room?

[Hamstraren]

RED = 45x45 RULE
BLUE = Faspanel, EX: https://www.byggmax.se/faspanel-p08414121

Does this sound like a good solution?
I am an amateur and have already put up the wall panels. I was thinking of continuing up to the ridge with the wall panels, but it becomes significantly more complicated to do for one person.

What do you think?

 

[Hamstraren]

RED = 45x45 RULE
BLUE = Faspanel, EX: [link]

Does this sound like a good solution?
I'm an amateur and have already put up the wall panels. I was thinking of continuing up to the nok with the wall panels, but this becomes significantly more complicated for one person to execute.

What do you think?

Or is it better like this? Must lower the CC distance from 1200 beams to 600 right?