Reputation and daily quests don't count on the quests list
Yes, it's possible to get Professionalism (i have it ^^)
You just forgot some quests to do.
You have more than 100 relics quests to make. If you forgot one, just farm again all relics dungeons for find them.
and in general, some players (like me) forget to check every green point. sometimes they give "normal" quests
I don't know exactly, but i'm around 920 quests right now and i have at least 10 quests to do again.
You will be able to get the 1000 quests when the level cap and zone 4 update will come.
For the 2000 quests, it's another story...
Last point, if you use the 3 last achievements of quests (900 / 800 and 700), you will have 36 + 32 + 28 stats points so 96
points of bonus !
Have fun ^^