Is there any way to make this tank bigger either width, length, or height I don't think you are going to have enough fuel to finish a race unless you can start about 1 min. before the race starts. Also if your needle is just a little on the rich side you still might not finish the race.
With the header tank on the inside of the main tank you should not need a 1 oz tank, I can put the pickup tube coming out of the main tank any place you want it except the left lower corner as ths is were the pick up tube for the header tank you can put it at the top and the pressure at the top of the tank on the right, the normal positions are the pressure on the left top and the pick up tube on the top right, you do not have to worry about getting enough fuel to the carb. because of the way I build fuel tanks.
I do have both of the props that you want I can send them with the fuel tank.
Thanks
Walt Barney