I say do all 3 then you won't have any regrets 
If not for money, space, and time.

Thanks for all the great suggestions - going to spend some time giving them all some thought.
The freshwater planted tanks aren't for me unfortunately. I've tried them a few times and found I'm best at growing various algae mainly.
I've looked into discus a few times. I've got hard well water and found tank raised discus would live in it, but they wouldn't be happy enough to breed.
I don't have big tanks already - would be looking for something on the verge of, if not, custom built for the sizes I'm thinking. Biggest I've own currently is a 180, but I haven't filled it up yet. 150 is the next in line. For being in the hobby for so long and having a respectable volume of tanks, I've just never made the jump to getting anything that needs more than 2 people to carry it.
@Rob - I thought about what you've shared in the past as I was making the initial post and was hoping you weigh in with an update. Good to hear you're still loving the huge tank.
@Dan - Definitely a nice reef setup there - thanks for sharing pics.

@Blair - I was almost going to thwart the big CA suggestion right off the bat knowing you'd post it.
