Well get to the magic number 15 and you will recieve a gr8 card called hugo.
anyway now sentinels hmmmm
you can go with the mono (one clan) or the dual option i suppose but its up to you really on that.
when choosing cards make sure you check out the reviews on those cards before buying to give you a feel of what the card will be like in your deck.
i would also reccomend going the dt route to get you clintz quickly but try to make your deck size 26stars because well you will get more pionts with 26stars.