Now back to the rifle you are in the process of deciding on. It seems you are not really decided, and a T3 with an aftermarket stock is nothing very special anyhow, so I am gonna make a couple of suggestions for you to ponder. For $1450 you can get a Sako A7 Roughtech Pro. It has the type of stock you are looking for, comes with two 5mm spacers to customize LOP, fluted barrel, and a nice squishy recoil pad. It is a really nice hunting rifle that offers a few upgrades over a Tikka T3. Just google A7 vs T3. Because it is new, you likely won't have guys sitting on either side of you at the range with the same rifle, as you may with a T3.
As for the Jard trigger, spend the cash if you want, but Sakos and Tikkas have triggers that many people consider very nice. For a hunting rifle, I do not think you need to change it at all, and 12 oz is just to light for most people anyway in a hunting situation.
Another gun you may want to look at is a Montana Rifle Co Extreme X2. Prophet River sells them in Canada. They are in a sense semi-custom as they are made to order. They are built on a Model 70 style action and come with the old model 70 trigger which is light years better than what they have now. The stock is made in house and is also quite nice. All reports have them as very accurate and people who have bought them seem to love them. As well, there is a huge range of cartridges they can be ordered in. Here is a link...
http://montanarifleco.com/?page_id=180 In my opinion, this is as solid of a pure hunting rifle as is offered right now, and you will be way further ahead than chucking a different stock on a T3. I believe they about $1750 (ish).