It's well known in some audiphile circles that 45rpm vinyl will sound better than 33rpm - with more dynamic range available. That said, for such a quiet, etheral sound of Victorialand, imo the original recording quality would be more important than the speed of the vinyl cut. I did have that album in my vinyl days and it's SQ was much better than Coctuea Twins' Treasure album, but the latter's SQ was a pretty low starting point.
Obviously, the 45rpm option is only viable for shorter length albums, unless you start using 2 slabs of vinyl for a single album (which some audiophile labels have done).
On the music front, if you liked Victorialand, you may want to check out:
Cocteau Twins - Heavan or Las Vegas. More "uplifting" than "ethereal". It's more poppy and commercial, but that doesn't stop it from, arguably, being CT's finest hour.
This Mortal Coil - It'll End in Tears. Elizabeth Frazer joins a sort of indie super group to produce a unique ethereal sound - darker, more gothic than Victorialand.