It is nice to see Schneider thinking 'out side the box' with the reverse pattern cam!!!
Keep it! I have been using them for 20 yrs. Many were used in the Engine Masters Contest.
Jon Kaase won the EMC [ he is a multiple winner ] with a 400 Ford engine. It made 660 hp at 6000 rpm.....with a 246/238 @ 050 flat tappet cam. So much for the nonsense about needing extra exh duration to make hp.....
When you increase int duration & lift......the engine ingests more air. When the exh opens, there is now more gas pressure in the cyl.....to push out the exh. Sort of self adjusting to an extent.
The other benefit is smoother idle, more vacuum from reduced overlap because it is the exh component of the olap that has the greatest affect on idle.
The 650 AVS2 would be the best choice. If you have some carb experience, a TQ would also be good but will likely require tinkering...
And sure as hell you can go too big with carbs. Remember the tortoise & the hare......
I have seen, felt & read of incredibly good acceleration times from cars with just a small 2 bbl carb...