Creating multiple blocks programmatically
The following code should help.  You'll obviously need to add your 5 blocks as appropriate, but it's just to show how you can add multiple blocks in one module:

function MYMODULE_block_info() {
 $blocks = array();
 $blocks['myfirstblock'] = array(
   'info' =&gt; t('My block admin info'),
   'status' =&gt; 1,
 );
 $blocks['mysecondblock'] = array(
   'info' =&gt; t('My second block admin info'),
   'status' =&gt; 1,
 );

 return $blocks;
}

function MYMODULE_block_view($delta = '') {
  $block = array();

  switch ($delta) {
    case 'myfirstblock':
      $block = array(
        'subject' =&gt; t('My first block title'),
        'content' =&gt; t('My first block content'),
      );
      break;
    case 'mysecondblock':
      $block = array(
        'subject' =&gt; t('My second block title'),
        'content' =&gt; t('My second block content'),
      );
      break;
  }

  return $block;
}


Reason for status =&gt; 1 from hook_block_info() API docs:


  status: (optional) Initial value for block enabled status. (1 =
  enabled, 0 = disabled). Most modules do not provide an initial value,
  and any value provided can be modified by a user on the block
  configuration screen.


I'm not sure where you got the one block per module idea from.  You can create as many blocks as you'd like in a module.