[Diagnostics]

The best advice I can give is to take a weekend and try out different compilations, set-ups, addons, etc. Once you have a feel for what setup you like with specific addons; start from there and build your own personalized UI. Personaly, coming from someone who heals as a priest and shaman I found grid and clique to be best for me. But for you you may like healbot or mouseover scripts. I play several toons so I use a personalized Namkung UI (which can be found here using the search function) since it includes all the basic functions for tanking, DPSing, healing.

I replaced fubar with bazooka and appropriate LDB addons. As well as replaced dominos with Bartender4 since dominos has a horrible totembar setup. As well as bumping up the fubar/bazooka KGpanel and chatframe panel so its aligned. And also shrunk the pitbull player and target frame to 98% width so it fits inside the kgpanel frame.