I have no clue lol I'm just letting you know from my experience as it was my first time like 2 weeks ago as well, and I regret not purchasing more pads. If you do M105/M205 you should do yellow pad + M105 and white pad + M205 then apply a sealant with the blue pad and apply wax by hand applicator/hand.

 

It's ok you should be alright with one pad. Just make sure to clean it after you do a few panels, throw it on your buffer, turn it on and let it air out for a minute or two and get back to work. I've been doing that with my details and it works out alright. Make sure you youtube some video's on how to properly operate your buffer, I checked some out and they were really helpful. Greg has been a great help every time so stick with DI and you're car will look amazing. Looking forward to seeing your pics, I'm going to go ahead and detail mine this weekend as well!