Hi Dave,
welcome!
I agree with what everyone has said about the greenhouse..
unfortunately greenhouses are basically useless in our northern US climate..
(which is why you dont see a lot fo them!)
its far too hot in the summer, and dosnt do enough to protect from the cold in the winter..
Really all a green house can do in our climate is extend the growing season by a few weeks..
a few weeks early in the spring, and a few weeks later in the fall..but thats about it.
That greenhouse will come in handy for tropicals during the fall and winter, so no worries about that-
well no, not really!
In Florida maybe..but not in Fort Wayne..
In the winter (in the north) When its 10 degrees outside, it might be 11 degrees inside the greenhouse!
basically pointless...
(and attempting to heat a greenhouse is our climate is really not practical..unless you dont mind spending $500 a month for heat..)
tropicals will need to be brought indoors...
Dave,
you will need to find some method of of providing winter dormancy..
the tricky bit is finding a place that remains 35-50 degrees all winter..
Indoors in any "living space" is far too warm..
outdoors is far too cold..
Some people can use a garage, if its not too cold..
or an unheated attic or spare room..
the "Fridge Method" is quite sucessful, (as long as you grow your plants outdoors April-October) Here is how I do it:
http://gold.mylargescale.com/scottychaos/CP/page2.html
http://gold.mylargescale.com/scottychaos/CP/page5c.html
Scot