Crushing Flames with Demonic is a good combo. I was doing something like that with a Prismatic Elementalist Wizard Noob Farm Build (only Luck and Gold Find). it also had Momentum, which helped a lot. it did a good job of smashing monsters up to Epic, and Legend/Mythic monsters, it depended on their affixes and map affixes. got me up to 800+, but I re-crafted it, and I think I have to craft a totally new Farm Build for my up to Floor 1k. the thing is, Crushing Flames is so good, it is almost too good, makes me feel like I am taking it easy or something. but it takes up space, especially if you use the Crushing Flames Bonus, and add some Blistering to really knock down the HP with Demonic.