Hello, if you’d like some more info on these archangels their powers are all described in Archangels of Magick by Damon Brand by the way, along with the Secret Names used in their invocations and evocations, the sensory keys to their invocation/evocation, talismans that call upon combinations of their powers, and a ritual known as the Ladder of Ascent, which allows you to channel the powers of the 10 Sephiroth, for practical or more “spiritual” purposes, though indeed with that ritual those things tend to be rather intertwined.
Also, I’d suggest using their names in the original Hebrew. That’s what the ancients used, and it seems to operate similarly to a sigil for a demon, for instance. Instead of gazing at a sigil, you could scan your eyes over the letters continuously as a way to maintain a connection. The Hebrew letters have an innate magickal power to them, so they are more effective than the English versions. I believe a similar principle is in-play with Norse magick and runes, to make a comparison.