The workflow plugin is indeed excellent, and surface plant farming is also excellent - especially hemp, which is also good for flour and hempseed oil, and the added fluff bonus that most of your dwarves are probably high at any given moment (sadly the game does not simulate this).
Even "x" clothing still gives bad thoughts, and will be replaced automatically if there are available clothes.
You usually want to make robes or dresses, trousers, and socks. Robes and dresses are the most valuable clothing in the game, trousers are almost always available for production, and socks are a DF tradition.
Clothing disposal -
This is very important to any mature fortress, as a buildup of items can and will murder your FPS.
Without cheating or exploits:
Dump the clothing outside of a Finished Goods Stockpile. It should rapidly decay and eventually be destroyed entirely.
Sell the clothing to a caravan. Worn clothing retains 1/2-3/4 of its value, and can buy significant chunks of the caravan - or you can trade it all for a single iron anvil. This has the advantage of not causing bad thoughts from destroyed masterworks.
Dump the clothing in magma. Designate a dumping zone right next to a cliff, and your dwarves will throw the item off of the cliff - and, say, into a pool of magma. This has the disadvantage of opening your fortress to the magma sea, unless you do something with pumps and bridges and other complicated things.
With cheating or exploits:
Dwarven Atom Smasher. Build a random bridge somewhere, raise it, and designate a dumping zone under it. Close it again, and everything in the zone will be destroyed.
DFHack. Use the powerful commands, "cleanowned scattered x" and "autodump destroy", and suddenly all worn and/or randomly discarded clothing will immediately vanish. This has the advantage of cleaning up permanently discarded food - a known bug involving being interrupted while eating.
In the next version, there will be the additional option of turning worn clothing into paper for the writing industry.