band saws

So looking into buying a used bandsaw, like a 10" or 12" Ryobi or Delta bench model. Question is the 24 tpi blades for metal. Any issue cutting up to 1/4 inch with these light weights? can I go a little more aggressive or do I still have to follow the 3 teeth contact rule? Jig sawing a 16 inch piece of 1/4 is a chore when your cutting like an inch a minute.
I think the rule is 1.5 teeth engagement at all time. You can use any tpi that is available for the bandsaw. The problem becomes overloading the motor. The 24 tpi takes a smaller bite than a 11 tpi blade.