There are lots of threads about whether it's "worth" upgrading. Only you can decide that in terms of miles (you don't have many) and $$$ (the state of your bank account or expansiveness of your credit card limit). Try this thread
http://www.flyertalk.com/forum/unite...s-upgrade.html
Also if you search using the terms "upgrade worth" you'll come across myriad other threads on the numbers of upgrades, upgrades selling for $$$ etc