Why? And have you actually measured the "performance" that you are sacrificing reliability for? I'd certainly want to quantify what I was getting in return for the reduced reliability. In testing I've done, I couldn't tell the difference between data=ordered and data=writeback with ext4. Or for that matter, between default and nodelalloc.
Even for a single user desktop, I just don't see that the trade-off is a win. YMMV, I suppose. But I would encourage you to run some objective tests.