Mt. of the Holy Cross from the Northwest Ridge is a good climb. It really has it all:

• a taxing middle-distance approach. From the Half Moon trailhead, you climb about 1k ft to the Half Moon Saddle THEN drop about 1k ft to the creek -- and so when you're trying to knock this out in a day, after you summit and descend, you still get another 1k climb before you can get back in the car.
• ample camping (see first photo). Good access to water. Good sized (i.e. 2-4 tents), established campsites. I was able to get stakes in the ground on a lightweight set-up, no problems. Very few places to hang a bear-bag though.
• minimal route finding. CO 14ers Initiative was out doing trail work and the trail is almost immaculate up to and beyond the tree line. After that, in the rocky section, there are amazing cairn with pine logs coming up out of the middle, visible from hundreds of feet away -- really makes it hard to get lost.

For Coloradoans this is probably a pretty easy, no camping necessary, jog from the parking lot, maybe even later than alpine start.

For sea-level people like me, this climb is hard enough to keep it interesting, but established enough to be achievable. Much more realistic with a hike-in and camp, but certainly manageable with an earlier than alpine start.

The only real advice here is when you make your left turn around Angelica Couloir, let the pine log cairn be your boundary (i.e. don't wander right of them), rather than your way points. Staying leftward, closer to the cliff, will get you right up to the summit a lot easier than picking your way from cairn to cairn.

And also keep in mind the water source here is top notch. Very easy to refill and so no need to hump so much water for the first and last three miles.

For me, specifically, I arrived late. Hiked in around sun-down. Camped by the creek. Started at about 4:45am. Hiked a little by full moon light and little by dawn light. Summited at 7:45am. Had the whole summit to myself, the whole time I was there. And then was back in the car at about 12:00pm. Weather quite literally could not have been better. It was cold enough to not have mosquitoes, but no need for insulating layer or gloves. Cloudless sky. Full moon. Epic dawn.

The report is called "Down to the River to Pray" because I had a word with God about forgiving the person that routed me up over Half Moon Saddle and down to that creek :)