Cardiocrinum giganteum - long wait for flowers

I've wanted to grow this for years. It's taken me years to get back into gardening and now that I have a couple large plots and I'm working on increasing soil fertility, I thought why not.

From the size of the bulb I would say that it might be 3 years old. Bulbs reach flowering size at 7 years so I have at least a 3 year wait if I am right about the age of this bulb.

The soil had rabbit and horse manure added over a month ago so it should be enough for this apparently greedy plant, more manure can be added at the end of summer if needed. I put a stake next to it so I know where it is after it dies back in winter.

I'm just wondering whether I should buy another one.