For Angeles Crest I like to go from the Lower Tujunga side.

Do a search on 10521 Sunland Blvd., Sunland 91040 which is a Coco's restaurant. Plenty of places to park a truck and unload. There are a few different ways to go up and around and back so I don't want to bore everyone I'll send you a PM with a map link.

The Rock Store Joel could give you better directions I don't go there much.