Just to share my experience in migrating from ST to HE.
Took me about 2 weeks to get it all done. There were some hiccups along the way. Things I didn't understand. Things I didn't know were there. (Stuff was probably in the documentation, just hard to dig out).
Still have a couple issues with things not working correctly, but hopefully will be solved shortly.
All in all it wasn't too bad. Remembering I took a couple years getting my ST set up, I guess HE was a lot better as I made it in 2 weeks. I guess my ST experience helped. I still have ST running as there are a couple things that so far I can't figure out how to do here.
So I am pleased so far. Will see how it goes over the next few weeks.