But now it seems it might be better to switch to 50% HP 50% HBD?

It depends a bit on what you are looking for. The stake will earn guaranteed curation, but you might be able to trade the HBD for a higher gain. I can't tell you which is better :)

but now I am stuck in HBD, seems like I might as well stake it for 15% as HIVE will probably not drop to 30 cents any time soon?

Yep. I stuck what I had in savings.