1) Yes, you can show “1 in stock”. To do this
a) Go to WooCommerce > Settings > Products > Inventory > http://prntscr.com/hf0lz2
b) Edit your product and set http://prntscr.com/hf0mc9
But there is no option to disable Q-ty for such products, unfortunately.
2) WooCommerce displays the attributes before the add to cart option only if this is the variable product. For simple products, WC displays attributes only on Additional Information tab. If you want to change it you may contact WooCommerce support about this.
