Jay,
I was wondering which of your garcinias you felt was the most precocious, while still likely to be self-fertile. I've been leaning toward getting a laterifolia from what I've studied so far. Ideally, I need a plant I can keep less than 6 feet high.
I don't think a garcinia would appreciate summering outside in Colorado, so it would be kept in my basement plant room at a fairly constant 65-68 degrees at night, 85-88 during the day, 70-90% humidity, and 365 days a year of "sun"-- but I only have 6 feet of clearance.
Thanks,
Kevin