How do I infuse correct? Do it fast or slow?

In addition to Hanaldo's advice, I've found that using a resin break of an inch or so (a deliberate gap in the flow media positioned along the vacuum side edge of the stack) really helps with achieving a fully wet-out part and can allow time for the resin at the part edges to 'catch-up' as it really slows things down. You just need to ensure that you factor in sufficient pot life.