The Daytona Float valve sounds a little suspicious to me. If it were that great, why wouldn't they show some real flow numbers to back up their claims? In my opinion, for a given fuel pressure, the only way to get more flow would be to increase the size of the float valve seat. But that could lead to flooding as the float would need to be larger in volume to counteract the force which is determined by the fuel pressure multiplied by the area of the float valve. Furthermore, their claim of being able to control the air/fuel ratio with the design of the float valve is certainly not something I use to control the A/F ratio. Yes, a bouncing float can cause flooding and insufficient flow can cause a lean condition, but if the float valve is large enough, that shouldn't happen.
Attaching a large external float bowl with a larger float volume (as generatorshovel has done) would seem to be the better solution as the larger float and probably larger float valve should be able to cope with the pressure of a fuel pump as well as allow more flow especially as required when using Methanol. The Amal Matchbox float (although I haven't got one here to measure) may be large enough to cope with higher flows and the increased pressure of a fuel pump, and it mounts on a diaphragm to isolate it somewhat from vibration. You may also want to increase the size of your fuel lines and petcock as you want to make sure the float valve is the most restrictive part of the fuel system if you don't use a pump.
Tom