Hi Cody Smith. Where are you going to grow your cucumbers? Are they indoors in a greenhouse, or ridge varieties to grow outside?
If choosing varieties for the greenhouse then from experience I now only grow varieties that claim to be tolerant to or show reistance to powdery mildew, like 'Tiffany' and 'Carmen'. Personally I no longer risk growing older varieties that do not offer resistance, as I've lost entire plants to this disease in the past. I certainly don't want to be spraying crops against disease, but actually I don't think there are any good fungicides to use in any case.
As well as the sowing instructions others have given do remember that cucumbers must have warmth and very good light (full light but not scorching sunlight). You must be able to maintain a temperature of around 20??C (68??F) for germination, and seedlings need a minimum night temperature of around 16??C (60??F). For me that means I need an electric propagator, as I can't afford to heat the entire greenhouse.
Poor light results in very drawn, lanky seedlings, so I'd probably wait for a couple more weeks until light levels improve before sowing, unless you have a lighting unit to place over your propagator.