Good luck and enjoy the journey. The three coffees you bought are individually, great coffees and in terms of learning to use the roaster, represent "safe" roasting ie they are very good quality well graded beans that will roast evenly and make the job easier for you as you learn the roasts etc. But they are pretty much similar to eachother in terms of what they will do in the drum. In terms of blowing a few kgs on the operational learning curve, you will (I think) want to roast some coffees that differ. The easiest contrasts that come to mind, would be to roast say, the Kenya, and roast an Indian A grade or a Brazilian. You will find they require different roasting styles. Also, if you are going to "waste" a lot of coffee to learn how to use the roaster, why use expensive coffees. Instead of the above, nothing wrong with using a nice FAQ PNG Y grade, and a simple Brazil Santos (for comparison of roasting styles as mentioned above). Plus you could throw in something like a "lowly" djimmah for a real comparison of differences! In any case they will all make great drinking regardless. Throw something interesting in man ! Also from my point of view, the three coffees you have are all individually, great coffees.....but I dont see much scope for blending. Next time you order, why not see if you can get some coffees that will complement eachother in blending, so that you are not restricted to SO's, and can progress to blend development down the track ( which you can start with, with the other coffees I've mentioned just to get your toes wet). Hope that helps, A.
