Well, it is all personal opinion, Weeksy will have you on the 27.5 but ....
Heres my theory - the taller you are the more 29 inch wheels make sense - its all about proportion.
I Have a 26er, and 27.5 and a 29er ... they are all completely different bikes
The 27.5 is hard tail and have been thinking of changing it ( I am waiting the the Covid pricing of bike frames changes) to a 29er.
I am about 189 cm tall - hence 29 inch wheels just seem to work better. They feel faster, they feel like I am rolling quicker. That said, they do steer slower but for 98% of us that is not too much on an issue.
My ( manual) FS is 130 mm upfront and 120 at the back. I ride about 70-80 kms on the Downs a week - and occasionally Surrey Hills (

)
TBH , I very rarely use all the suspension travel - but I am not a jumping gaps sort of person.
Both 150 /160 are a lot of travel - I doubt very much you will every use that. If it was manual, then you are just lugging around extra weight , but on a e bike that won't really matter.
On a manual it would make it wandery up hills - but on an e bike that isn't really an issue.
Weeksy will be along to disagree
I have ridden the Whyte 160 e-bike. It is like riding monster truck - you will never have to make an effort up a hill again...