[quote=Lost Cause]
Is Basilisk Venom even something that can be used in wandmaking in canon?
[/quote]

It's doubtful - it has no real magical qualities other than it can destroy Horcruxes and poison people. I think it'd be far too volatile in the delicate creation of wand-making. Even for cores, the most 'hardcore' things used are Dragon Heartstrings, and Thestral tail-hairs (Which, as far as I know, is for the Elder Wand only.)