I don't think it takes a year of testing to get it right unless you want it to. You really don't have to know how every wax performs, just the ones your are interested in. You can test every wax if you want but I would test a couple from the closest supplier to you. When I started I used 1 wax for jars and 1 wax for votives and made about 15 scents. I started in the spring, tested over the summer and was selling in the fall. Then I started adding scents, changing jars and about 2 years in moved from paraffin to soy. Once you know how your wax of choice works and how to wick it, just test each new scent top to bottom in each jar (I usually pour clamshell tarts first and then pour a couple of each size jar in that scent if I like it enough to think about carrying it). I rarely have to change wicks from my normal but it does happen and that is one reason I test. I have been selling for 9 years and have made a profit every year but the very first even if a couple of those years it was not a large amount. You just need dedication, enough cash to start in a big enough way to do all the testing and a lot of hours in the day to burn those candles...and loyal customers, lots of places to sell or a way to drive customers to your site (I'm obsessed with staying on page 1 for wholesale soy candles-lol) and insurance - get that insurance in place as soon as you start to give out candles even if they are freebies. Have fun!