Two issues (level 40)

My Prot Pally/Resto Druid are at around level 40 and I've been having two issues that may or may not have solutions when I do dungeons with them using the dungeon finder.

1) My tank is almost never the leader of the group. This isn't a huge deal in and of itself. (I use my numpad keys and numpad + Numpad0 as a modifier for healing), but when it comes to the rest of the group I can sometimes get confused who is what number, as its always slightly different for the druid if someone other than my pally is the group lead.

To clarify, when pally is lead my grid (on the paladin) shows Pally > Druid > Party 2 > Party 3> Party 4 which corrosponds smoothly with 1-5 on my numpad. If the paladin isn't lead, then the numbers aren't guarenteed to be in the same order on druids bar as they are on pally. Generally I get the paladin number sorted out in the first few seconds of the instance, but sometimes misheal the dps. Does anyone have a suggestion for how they'd handle this mental block? Or is the solution just practice practice practice more.

2) My other issue is that my paladin is running out of mana (I've been judging wisdom) when using her heavy tanking rotation > taunt, judge, consecrate
I have my non heavy rotation judge > exorcism that works fine on one mob, but of course some mage always goes off and grabs the next pack because he's bored so I'm almost never on the downtime of one mob. Suggestions?

In other news I'm having a lot of fun with the pair... I got a lot out of a 5 boxers suggestion... especially the idea of an "oh shit" button that has definitely saved my group multiple times (right now its tranquility on the druid and sacrifice then something else on the paladin). Strangely no one has commented on my multiboxing since I started queuing... which was definitely not my experience the times I took pairs of boomkins to instances before.

What software are you using?

AutoHotkey

Basically because its free and I've used it before so I'm comfortable. I know its not exactly the new hotness. I really like how I have my keybinds set up, I just wish there was an easy way to make the group layouts.... hmm that gives me an idea.... Maybe if I used REALLY BIG grid boxes on the druids monitor

You might try an addon for healing, I use VuhDo and levels 72-80 using LFD tool so the order did not matter.

controlling two toons in a pug might be hard, and you are using the heavy mana spells to tank with. There are other rotations that might work better. I am not a pally person, still learning.