Thanks for the reply. This is a super interesting project and I wish you great success. As a builder/pilot I have so many little questions, mostly around how you're making all the trade-offs and decisions that pilots make based on the situation in the air (leaning for cruise / power, climb and descent rates, weather-related decisions, switching tanks, and so on). Do you anticipate equipping / certifying the airplane and systems for instrument flight? Is your entire avionics package custom, or do you use some off-the-shelf?