The BiSide and Episode are both available (and in stock) in ARC versions if you want to do a personalized scheme. The Plettenberg Advance is limited in the amount they can make and typically sell out within 1 day after they arrive. The factory is sending us more today so we should have them in a week or so. The Q80 is a great motor as well but you need a controller that works well with a 28 pole motor (Jeti or YGE typically). The firewall mounted motors, Himax, Hacker 7S, Eflite are all good options as well the only downside is fabricating a firewall which is not very difficult and the reduction in airflow to the ESC and batteries due to the firewall blocking some airflow (even with plenty of cutouts in the firewall). If you are flying FAI then really any of the listed planes will fill the bill and all except the Spark are readily in stock in the US today. And I would not try the 8S power idea, been tried many times before and nobody stuck with it. You need much higher amps and subsequent heat and inefficiency in an 8S vs a 10S setup.