The cuff is not an unacceptable placement for monogram. It is just usally closer to the fold. A less bold color would be nice. a Pale blue or silver is not as noticable as navy blue or black.
I usually add 2.75-3" to the actual wrist measurement. .25-.5" more to acommadate a watch.
Ihave been doing this for over 20 years. I have never heard of "3 ply 100% cotton in la coste pattern weaving."
Where was this shirt made?