Originally Posted by
Daveon
You do know that ilvl doesn't really matter in Proving Grounds, since it lowers all your gear to 463 right? (just make sure all your gear is at least 463) It's not so much the ilvl, but more the itemization (secondary stats) that is important. There's a reforger inside the instance exactly for that reason. Make sure you have the correct secondary stats for the spec you want to play after you go in. Reforge if you have to. Use a flask (I had to use a spirit flask to not run out of mana in PG, which I don't normally use while raiding).
Timeless Isle gear can be pretty poorly itemized, depending upon what you randomly get (or if you keep doing the same pieces over and over, you can get the exact itemization you want).
The most important thing with the Proving Grounds is practice. Know what's coming, the waves are always the same, so you can be prepared, and know when to use your cooldowns, etc.