Just an FYI, technically it isn't ORTF with large diaphragms but using that spacing can work rather well depending on how close you are to the sound source. I'm more of a PAS kind of guy now after having stuck to standard mic configurations for years like DIN, DINa & ORTF. Take the time to read Gutbuckets excellent post I've linked below for you. It will go into great detail on running your microphones in various configurations besides ORTF, DIN & XY.
http://taperssection.com/index.php?topic=167549.0Running your 414's horizontal is fine, may not be technically correct but it definitely works. They are great mics, I usually run mine with a wide spread vertically when running sub/wide cards, cards, super or hyper. I run mine horizontally for Blumlein which looks like XY. Make sure you experiment with polar patterns, it's great to have easily selected polar patters, just one of the things that makes 414's so great. It's also an excellent learning tool, an easy way to see how different patterns affect the sound in various rooms. Good luck, have fun & welcome!