So I swapped out the DK for my Pally tank and added in my resto Druid. All I can say is WOW, what a huge difference this has made, the pally straight off takes a lot less damage due to his much higher armor and he is just way easier to hold aggro on. I am getting used to healing with the druid using ISBoxer regions and I have downed the first boss in HoL, woohoo.
So I also spent a ton of gold on gearing up my two locks which now buffed are at around 1800 sp, they are doing between 1300 - 1400 dps using a single spam macro but on the target dummy manually playing them I hit about 1600 dps, so I need to do some changes to their setup.
All in all I am much happier with the pally and druid and hopefully soon I will get up the guts to run a heroic lol, I think I just need some more practice and tweak my setup first though
Thanks for all the help