Using multiple versions of jQuery while still calling it like WP likes

I have two JS plugins inside my plugin. One uses jQuery 1.7.1 and the other 1.9.1.

I need to have each of them use different version? This is how things are at the moment:

Plugin php file:

wp_register_script('jq-1.9.1-js', 'https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js');
wp_enqueue_script('jq-1.9.1-js');
wp_register_script('jq-1.7.1-js', 'https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js');
wp_enqueue_script('jq-1.7.1-js');

Plugin JS file:

var $j = jQuery.noConflict();

$j(document).ready(function() {
	// plugin 1
	$j('.someClass').plugin1({
		// options
	});
	// plugin 2
	$j('.someClass').plugin2({
		// options
	});
}

I searched google quite a lot and saw solutions for multiple versions but they did not take into account the proper way of including scripts in WP (the use of register and enqueue).

Thanks