minkie is pretty warm- especially with batting- often people leave out the batting when using minkie for the back. i've made quite a few quilts with minkie backs- all have batting- they are heavy, warm quilts- if you want to use batting you may want to choose something (less dense) than the warm & natural- hobbs heirloom 80/20 is one of my favorites.
if your son likes heavy warm snuggly ones he will love it. i don't know if it gets chilly in Dallas but i had a gentleman in Houston purchase wool quilts from me---he just turns his (AIR) higher- keeps his place quite chilly - doesn't matter if its 90 outside.
