Tankadin + 4 locks how far can we instance level?

[Pavavion]

My orginal single toon (Kara/badged gear lvl 70 tankadin) + 4 boe, quested, instanced gear locks are currently farming up to Underbog but I was just wondering how far do you think I can realistclay progress before needing to throw a healer into the mix?

Successes so far (full clears): Ramps, Blood Furnance, Slave Pens and Underbog. Have done 2 trash mobs in SV but the xp/hr calculated out to be not even worth progressing further. Just curious for feedback as I am hoping to push a few more levels in instances and save up as many quests for some fast cash at 70?

[Sarduci]

If you're total dps needed per pull happens faster than the amount of time it takes for the mobs to kill your entire party, then the limitation would be how often/fast you can rez your tank when it dies. Being T4 geared gives you avoidance instead of just soaking damage, which will help.

[Coltimar]

I went all the way to 70 without a healer. If I get enough gear for heroics before the xpac I'll need a healer then.

[Hachoo]

Seems like it would be easier to use your pally as a healer and spec your 4 locks demo and have the voids/felguards tank, at least then the locks could heal all of the pets on their own while still dpsing via dots, and the pally could offheal

[Pavavion]

Seems like it would be easier to use your pally as a healer and spec your 4 locks demo and have the voids/felguards tank, at least then the locks could heal all of the pets on their own while still dpsing via dots, and the pally could offheal

Hmm never really theoried out the option of the locks tanking and the pally healing. I dont have the equivalnt healing gear set that I do have compared to my tankin set. Wouldnt a boss 1-2 shot the lock "loltank" pets though even with the pally healing/oom issues? Plus the ability to aoe tank on the pally just assumed I would have greater surviablity with the tankadin....

I respecced allthe locks to aff since the patch to try the self suff healing it provides and I have had less/no lock deaths in areas which I used to. unsure if this is just due to the nerf to dungeons since the patch or if the self healing aff brings is the difference.

Can a meta lock boxer share their thoughts on if the lock tank or lock pet tanks are viable in normal instnaces all the way to 70??