Welfare said:
Don't be afraid to pop Reraise, drink some drinks, eat some food, and push your job's limits as well as your own. PL becomes a moot point then.
I do that anyway. Lol... I tanked from 40ish to 75 on my MNK, without a PL (very good SCH in my static though) so dont get me wrong, you don't need a PL to have an unusual pt setup(like a MNK tank, alot of PTs said "wtf wheres our tank" but yeah...)
PLs make it easier, doesn't remove anything from the game (a good PL would haste/light heal if there was a defined healer in the pt, like a WHM.)
But yeah... gogo PLs.
Edit: If you're doing 7k/hr and you're 40k tnl, that's a long time. (assuming you're using a generic pt, with healer, suport, tank, and dds.)
