Another huge advantage of the 180 is the increased MTOW compared with either the 140 or 161.
We used to operate all 3 variants; the 180 was only 25 lb heavier than the 140 but had a MTOW 250 lb greater!
With full fuel (approx 300 lb), the 140 will take about 475 lb of pilot, pax and bags. A 161 will take about the same, although it has a MTOW 175 lb greater than a 140, it weighs nearly 175 lb more!
Whereas a 180 will take about 700 lb of pilot, pax and baggage. Far more suitable for those of the cuddlier figure!
As always though, check the weight AND balance!