Any advice for dynamic radio butons
Personally, I would create a custom module with a custom form and block. You're gonna want to study up on the form api. You can pass variables to your form, which for you would be your node object.

The block is really easy, just use hook_block_info() to define your block, hook_block_view to define a subject and callback function, and then just define a callback. 

Something like this:

function mymodule_block_info (){
   $blocks[0] = array(
      'info' =&gt; t('radio thing'),
      'cache' =&gt; do_stuff
    );
   return $blocks;
}

function do_stuff(){
    //where radio_form is the implementation of your form (make sure it has a param for the node
    drupal_get_form ('radio_form', $node)
    return $stuff
}