I don't understand the point of making a macro for this because you're basically just queuing up actions every 2 seconds or so - not really the most dexterous of feats. If you want to DPS and do it efficiently, you should be focused on having your fairy do all the healing it can do, ie. microing your fairy while DPSing, which in turns gives you an easier time in staying in Cleric Stance due to the vastly improved HPS-rates (not to mention micromanaging is just one of the job's key-features if you want to minmax, DPSing or not).

If your gameplay is at a point where instead of focusing on the micromanagement minmaxing you are worried about the convenience of applying the DoTs themselves without any extra, you should practice a bit more. It is definitely not worth the clunkiness and the potential macro-fails that can come from server lag, executing another macro while the previous one is still going out etc etc.

Make a target's target Embrace-macro and keybind it to something you can spam easily. Keep spamming that religiously on cooldown while spending your GCDs on damage dealing spells simultaneously. That is the way to maximize DPS & fairy-HPS at the same time.