If those rovertracks trailing links are adjustable, it would be fairly easy to pitch the pinion up (I don't think you'd need to worry about the a-arm extension, but you'd have to try to be sure). If they're not adjustable, it might be more trouble than it's worth with just a 2" lift. In that case, I would suggest just making sure the pinion and t-case flanges are perfectly aligned and your u-joints might wear out a little quicker because they'll be working at harsher angles. If you wanted, you could have a custom, higher-angle DS made, but that would be about as pricey as getting new trailing links.
Mom: "Boy, you got champagne taste on a beer budget."