Cycle takes as long as it takes.... I skipped it by adding tons of plants as they take up the ammonia produced by the fish and wastes immediately, no cycle needed. Water, plants and fish after the plants settle in for a few days. I found that one plant (the plants usually come in bunches, even as many as 9 or 10 depending on the store) per gallon of water is good if they are all fast growers, stems, floaters.
If plants interst you check out my plant thread as I list the plants that I used and a few other tidbits http://www.tropicalfishkeeping.com/a...g-tank-124636/
Add fish gradually.... I went with 12 barbs on my fish addition and think, for a 37 gallon, they were a bit too much at once as my tank cycled anyway, although it was jut a quick nitrite spike.
You still end up with all the bacteria but they don't need to be there as as large a quantity so the silent cycle is much less pronounced and much quicker... I think that most even miss the little spike that they might have depending on the fish load added.
If you are fixed on no plants and cycling or even cycling first then plants, I hear 5 weeks is not unusual.