Hi and welcome!
One minor thing i have seen, as i am no expert in lore or such so correct me if i am wrong, is that Darkspear Trolls moved to Senjin Village after the events of WCIII. That is roughly 6-8 years earlier than the current time in WoW. Before that, they have been living on an island (i guess? I don't know well), so simply if he was born 31 years ago he must have born somewhere else: "...As tribal rivalries erupted throughout the former Gurubashi Empire, the Darkspear tribe found themselves driven from their homeland in Stranglethorn Vale. Having settled on the Darkspear islands, which are believed today to have been a part of the Broken Isles,..." from wowpedia.org article of Darkspear Tribe. So i believe that should be corrected. Senjin was founded much later, likely when your character was in his mid 20's:
"...Thrall and his followers managed to fend off further attacks by the Sea Witch and her murloc minions, and set sail for Kalimdor once again. Under the new leadership of Vol'jin, the Darkspear swore allegiance to Thrall's Horde and followed him to Kalimdor..."
"...Having reached and founded the orc's new homeland, Durotar, the trolls carved out another home for themselves — this time among the Echo Isles on the eastern shores of the new orc kingdom..."
"...Shortly thereafter, a witch doctor by the name of Zalazane began using dark magic to take the minds of his fellow Darkspear. As his army of mindless followers grew, Vol'jin ordered the free trolls to evacuate, and Zalazane took control of the Echo Isles. The Darkspear have since settled on the nearby shore, naming their new village after their old leader, Sen'jin..."
Here is the link to the article, it is a pretty good read and informative:
http://www.wowpedia.org/Darkspear
I hope this helps. If you have troubles with the timeline, there is also a good timeline in wowpedia.org that many of us in this forums use to base our characters on. Here is a link:
http://www.wowpedia.org/Timeline_%28unofficial%29
Nevertheless, an interesting character with a different personal aspect, much promising
Regards,
-Meng