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Oil and water based lubes are fine - no silicone. Check your Astro Glide for silicone.
Have fun!
Xileh
Silicones will have chemical names ending -siloxane.
Safe for you Syn, but not necessarily your butt; astro glide and KY jelly are both chocked full of glycerin, which can cause urgent spontaneous bowel movements in most people. I suggest you try some beforehand to make sure it won't cause a problem.
One of the best anal-safe lubes is Slippery Stuff Gel; there are many here who like natural oils like coconut oil, palm oil, olive oil. Vaseline works well. I'm not sure how silicone and oils react; I thought they were compatible; it's just silicone lubes that react with silicone, but it's best to read your instructions first.
Congrats on your choice, and good luck.
For info: Astroglide-X is a silicone. "intrigue" is the K-Y silicone lube.