you will get tired of the unnecessary boinging up and down, you can lock them out but no point getting them. Motor wise, I tried the Bosch and Shimano, and didn't really like the STEPS system over the Bosch.
I dont want to muddy the thread with a hard tail is better than full sus or vise versa post but ,
"Boinging up and down"
Full suspension design in linkage and shocks is far more sophiticated than that these days
I dont get noticeable peddle bob on my current bike or the one i had in 2015 both are pedelecs and the rear shocks are far more tuned than just full lock out and full open settings most have three settings with a lock out which never fully locks the supension but instead allows impact absorbing for hardish hits
A middle setting which allows climbing and trail riding or full open for down hill blasts all are controlable with rebound adjustment too
I will say i have had a hard tail mtb for many years 35years actually and am still a massive fan of them still owning and riding one on a regular basis back to back with the full sus and have tried a suspension post (suntour and cane creek thud buster ) and found them both to be bouncy and undampened when hitting bumps , they do help a bit with harshness but are no comparison even on the road to a well sorted full sus
I will agree thou there is more maintenence with a full sus but a good quality bike will go years without bushes for example my last full sus a 2015 Ktm macina didnt have any bushes or wear in 5000 miles of 50/50 riding between commuting and red and black runs
As for motor comparisons again thats personal there both good and you wouldnt go wrong with either but if off power drag concerns you stay off a small cog bosch cx as the drag is just to noticeable compared to others including the shimano e8000 and thats after putting over 12k on 3 cx motors and enjoying them and only 500 miles on the shimano so far but even in that short time i wouldnt go back to a small cog bosch over a full size cog motor
Again thou only you can decide i just felt to explain a full sus as basically an undampened disaster on the road was un justified and totally misleading comparison between hard tails and full suspension .
Now get out and try some bikes