Sounds about how I figured it will work. Temps fluctuate so much here, seeds have to be started indoors and seedlings need to stay indoors for a while. Greenhouse should help me get some of the bigger plants out of the house sooner. Still might be some shuffling indoors on cold spells.
I was running out of room in here last Spring and had lighting hanging at 3-4 different heights in different spots. Having a dedicated room will be a big help. Also got my eye on a shelving unit to use for a seed tray rack.
I will be setting up some sort of lean-to greenhouse against this SE wall, however crude/cheap it may be.
If you can find old sliding glass doors that no one wants anymore, those work great. HOWEVER - be mindful of overheating if it’s facing South. Leave some gaps between the windows for air.
I built my first ‘greenhouse’ that way and cooked more than I grew! ;)