My goodness 51 state, are you trying to start a plantation?!
You probably saw my earlier post on
germinating seeds.
Not necessarly the best method or design, but it certainly does the job for me and takes little space. I have hundreds of plants under growth-lights as we speak. A reptile heat-mat under the boxes with seeds does the job. When you see roots on the seeds, simply transplant them one by one. To get the low temps, simply put this in your bedroom, keeping the window open. And put the heat-mat on a timer. 10 hrs on and 14 off.
Erlend