My BCE/ED started out higher so i think a 3x on them is more likely, but i thought about moving it all to Delta/SPG so i would have even more to 3x. Those cards started at the bottom 1k limit, so i dont want to find out i can't 3x those and have to wait till i can ask again.
It doesnt really matter what limit you have, you can PC to Magnet. I have a few 1.5 and a 2% card so while i may PC to Magnet i'm not that worried about it either.
If you at 1k on your delta, that is the lowest it will go and you will get an error. i know i did.