Yeah, I use Brodiemann's and it works fantastic. If you just load the Timeless Coins Grind it will loot all the chests first then start the grind. My only complaint is that it doesn't go after rare spawns which drop significantly more coins.
As for the Burden of Eternity, not many people seem to know but there is a blazing chest that guaranteed drops Burden of Eternity.
Just buy that and swim to the closest shore, then swim out of timeless isle (you'll start getting fatigue when you're out), mount a flying mount and fly up above the area (staying out of timeless isle), then fly in and once you get dismounted quickly use the glider and glide to a corner where there aren't mobs. There will be two things guarding it and they will kill you pretty quick, so just focus on looting the chest. Also, land on the left side where the chest is. You can't get across from the right side and if you land in the right side you'll be teleported to the celestial courts.
If you really don't want to buy the glider, you can also attack a seagull which is flying around the isle. (easiest to hit at west end of Celestial Court). If you attack it once the bird will pick you up and carry you, and once you're where you want to be kill it (it will stop moving). This is also how you get the two chests on top of mountains. It's a fairly lengthy journey though.