Just below and to the left of your circle is a threaded hole in the intake manifold that whispers to me "Craft up a support bracket". That's a lot of pretty blue fuel line hardware that's dangling in space.
Yeah, I did have that concern originally, but after connecting everything, there doesn't appear to be any stress in that area (maybe because the aluminum fittings are so light?).
Thoughts on that 45 degree elbow fitting barely coming in contact with the manifold? Do think I run the risk of the fuel boiling, vapor lock, etc.?