Mage + Gift of Naaru + Lifeblood = good idea?

Hey everyone,
I'm pretty new to WOW and was doing some researching and theory crafting and came up with the idea to role a Draenei Mage and take up herbalism to give them lifeblood to combine to gife them some decent self healing.

Is this a viable idea (mostly for pvp and leveling)

Could they be macroed together?

Would this make for a strong heal if they were combined?

Any thoughts or responses would be greatly appreciated.



Thanks

edit - I just wanted to add that this is for the Lordaeron server.

Lifeblood is like a second HP bar while leveling and this is more true as lower level you are. It doesn't scale that well at higher level. GoN is an OK healing spell, but don't spect to make the big difference with these two, although while leveling a mage they become a very nice self-healing macro (yes, you can macro'em).
I wanna add that I personally would go gnome mage since they have increased intellect (right?).

OK, thanks. It doesn't sound like it's all that great at end game so I'll probably scrap that plan as I'm not that into the Draenei in general.