I love that you've included Joe Vellano on your list. Guy is way underrated.
I have Chris Jones higher than you and Shariff Floyd lower. I like the props you give Kawann Short. I don't understand why he's considered second-tier in this year's DTs. Definitely a first round talent and first round production in my opinion.
One more linebacker I suggest you look into is Ja'Gared Davis of SMU. That guy can do it all. Also, a LB conversion I like a lot is Brandon Sharpe, DE from Syracuse. I think he's better than his predecessor Jones. While he played DE, he's the perfect size for a 3-4 OLB and already has experience dropping back in coverage, which he does very well.
Another LB I like is Jordan Campbell. He screwed some stuff up early in his career but he's got talent out the wazoo.
One more conversion project that I think is good is Armonty Bryant. I went to the Tx vs the Nation game this year and he was absolutely dominant. Ended up showing well in the combine as well.
I have profiles of Sharpe, Campbell, Davis, Vellano, Jones, AJ Francis, and Bryant on my site. If you're interested, send me a message and I'll give you the link.