Centre stand looks like the old (weaker / flawed) style. Have a close look at it... the rubber ends (I think yours are missing) allow water in and they rust internally, weaken and collapse.
They are replaceable with later model stands (not sure if there are some not others)
My stand collapsed and I rebuilt it with smaller round hollow tube bend to fit the curve, rewelded the original external tube and filled it with quality rust converter and paint (rust guard)... sump oil or grease might be suitable too.
If your left leg collapses (like mine), the inside angle is 86 degrees. DO NOT copy the RHS angle (as I did ... initially). More pics if needed.
Apart from this, the bike looks like the business and (as mentioned by others) I hope your enjoy the journeys ahead.
To me the K bikes are as German as birkenstock sandles - not everyone's cup of tea but once converted there's no turning back.
safe travels
Guy