Beautiful color for fall!
I am pear shaped as well and have trouble wearing this length if the hem lands at what I feel is my widest body part. For me, this is at the top of my thighs. Not sure where the cardigan ends on you but if it is at your 'widest' part that might be what it causing it to feel bulky. Not that you are wide anywhere, but I hope you know what I mean.
Having said all this, I do love a long cardigan. Mine end further down my thigh, anywhere from just above to slightly below my knee. I wear them with everything from ankle pants or capris in warm weather to jeans.
For short legged me, wearing long cardigans with a little heal helps.
Looking forward to seeing how you style this.