If you didn't do
Scaredy Cats, then you may want to do that before setting out to do too many Reives as it allows you to get Reive Momentum bonuses.
Pretty much go to BG Wiki's
Adoulin quest page and skim the Rewards column. Stuff in quotes is either the ability to damage things in Colonization Reives, or a way to traverse parts of the map. Resliences are nice, but not usually as critical.
You'll run into the quests and/or need for the KIs as you explore the areas, but looking them up beforehand might help you have the quest items on hand. Obviously, there are spells to hunt as well.
Set RoE objectives for Reives, as they all have a small JP% boost as a first time completion reward now.
You also want to start doing Coalition Assignments because you need to spend a decent number of Imprimaturs for initial Adoulin mission progress, which also ties into your ability to enter Wildskeeper Reives. You'll need to have some Bayld to buy those KIs, but you may also find some of the gear you can buy with it useful. Augmenting also takes a little Bayld per attempt.
As you get that stuff more fleshed out, move to the higher level areas for Reives, as they can potentially reward you with JSE capes. While getting a BLU cape might be relatively unlikely, you can trade three capes into an NPC in the library in exchange for a specific one. Then use Refractive Crystals to augment.
You can likely solo some of the T1 Delve NMs outside for possible drops or access to buy accessories with Plasm (you can redeem Copper Vouchers for that if you don't do Delve, which isn't especially practical, but just for earrings or something it's viable).
WKRs can wind up being quite productive. Again, remember to set RoE objectives, doubly so for those because you get a KI to spend from them, either to put towards buying items that refuse to drop, or
augmenting things that did. They also all have spells to learn.