Hey Dan,
I will still differ with you..
. but just something to consider..
ON the link you provided for ECI... they state in the questions and answers that an electric driven boost pump is used for starting and emergencies.
Also they state that the boost pump that Van's supplies is adequate.
It is also shown in the fuel diagram in the lower portion of the page.
The only aircraft that I ever had that if you used boost pumps to start it would flood the engine since 2 pumps other pumps were hot wired and they would be on continuously was on a volpar conversion H18 nose wheel Beech 18 with radial engines of course. As I caught the ramp on fire at Tallahassee one night on a freight run.
Even on my Superior XIO360. I have an electric boost and engine driven pump... exactly like the fuel diagram ECI described. And never had a situation where it appeared the engine would quit if I put the pumps on in flight.
If you compare it to a continental engine.. such as IO 470's, IO520's, IO 540's on Cessna's and Beech's it would appear that on those aircraft such as 310 you used the pump during Starting, fuel tank switching from inboard to tip tanks. but you could burn off either tanks. Switching on a 310 to the inboard tanks would not only allow you to fill the tips back up but also provide fuel for the engines. plus move your CG around.
Be honest It's been a long time... since the old 310, B56TC days. I would have to pull out a pilot manual and see about landings. 1973-78 is a long time ago.
Just food for thought...
You might be correct... or their might as Jesse stated be a problem.
Smilin' Jack