Gluten Free Girl's guidelines for making your own GF flour blend is fantastic. Make your own blend with flours / starches you like, and then use that for all baking. It is really easy to sub out regular flour with GF flour in baked goods - for every 1 cup of "normal" flour, use 140 gms of your GF flour. It works SO well for cookies, muffins, brownies, etc. Scales are better for GF baking because not all the flours weigh the same.
I love A Baking Life - she is a pastry chef, so you know her stuff is good!
Also La Tartine Gourmand.
(Sorry can't get them clicky)
I have a recipe for sugar cookies that you can roll out just like regular ones - if you want that, PM me!