Figured out how to do this, here is the code that I added to the functions.php file to allow for a custom min amount.
function check_donation_amount($valid_data, $posted) {
if ($posted['give-amount'] < 5)
give_set_error('donation_amount','The donation amount must be $5 or more. Please go back and select a specified amount or enter a larger donation amount.' ,'give');
}
add_action( 'give_checkout_error_checks', 'check_donation_amount', 10, 2 );
Nice, I’m glad you got that figured out. I’m going to add this to: http://github.com/WordImpress/Give-Snippet-Library