With the anticipated increase in interest rates, the number of motivated buyers is likely going to decrease, creating a slower overall selling period. If this is indeed the case, taking advantage of the present market may be your best avenue.
Not really sure what the best time of year is, but these guys do a great job. I suggest just having gthem list it and see if you get any bites. They market themselves well, so you should be able to get back what you paid if not more.
You can control the first two. Your competitors scores on those 3 and the numbers of buyers per month for your price range and area determine the market.
Chattanooga historically sells well in the spring and fall around school year starts and stops. The competition also increases in those time periods, so you may be better served to list in the winter when the "shopper sellers" are out of the market and serious relocation buyers are coming in for a new year job start.
If you experience no showings in the first weeks of marketing then you most likely have the price too high for the market. If you are having steady showings and no offers within 3 months you are still too high or the condition is substandard.
Pulling a listing may be beneficial only after 4-5 months as the Days on Market for the 403 home sales in Hamilton County in June 2012 was 129 days. Listings do get stale if not priced correctly and buyers wonder what is wrong with them.