Helleborus question

As I have mentioned, I've potted up my first 'baby'
helleborus starts into gallon pots-can't move them to
a permanent location because the threat of a move
hangs over my head (sometimes heavier than others) but
I wonder-
*how long does it take a tiny helleborus (these have 3
leaves each of about 1/2") to become a plant that has
blooms?  If we do move, I'm feeling a bit iffy about
the ability of my full grown helleborus-the ones that 
were purchased 5-6 years ago as full sized gallon
plants- to stand a transplanting.
Marge mentioned that they have huge root systems and I
have read they don't like to be moved once
established.
I really really like these plants-they grow amongst
bleeding heart, trillium, daffs etc and present me
with the first color every year.  
Should I plan on purchasing more older helleborus if
we do move?
Our options are begining to lean towards a new house
built on the subdivision that our property will be
part of-for future sale as we get older, ease of
upkeep and for location...frankly this spot is really
hard to beat for commute that DH makes and should he
change work locations, we are a bike ride away from
the light rail line into Portland.
This would put us on a scraped bare lot that is
wetlands border now, a fairly large house on a small
piece of property.
With that in mind, I'm dreaming about gardens with my
favorite picks of plants...now I have the space and
light to grow anything my heart and pocketbook allow
but I know a garden in a subdivision will need to be
more structured-although I have few plans for grass
(what a waste of space) still there is need to curtail
my present habit of trying any plant that hits my
fancy.
Appreciate comments
Elle in Oregon-Z 8 Willamette Valley/Sunset Z 6a

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