Glad to know you made it to Zion and are already summitposting about it. Have you looked into Horse Ranch Peak yet? I noticed it hiking in the Kolob area a few years back and it looked pretty cool. Lots of interesting and inaccessible looking hanging valleys in that area in general too.
No, I haven't looked at Horse Ranch Peak, but I hope to get back out there again this time next year, with North Guardian Angel being a key objective. We did spend some time off the Kolob Terrace area; I got my wife to climb Cave Knoll with me and did the Northgate Peaks by myself. The eastern peak is nothing great, but the western one has some fun routes and views just as good.