drop down value on form 1 determines which form 2 is displayed

First I would like to have a drop down value on my first form direct which form is loaded second.
Second, I am trying to load the second form within the same area on the same page rather than a confirmation or redirect, replacing the area previously taken by form 1. As if it was a page 2 of the form. My second form(s) accept query string to populate hidden fields.

Alternately could I change the short code form number dynamically based on a dropdown value on form 1?

Any suggestions?

Here is what I am trying to put together:

Form 1 has two dropdown fields, one of which is which state do you live in?
I would like to set the dropdown for state on form 1 to redirect to a specific url based on the state the user selects.

There are 50 pages containing a different form 2, a page for each state with a unique form. The page slug for these corresponding pages are each state's 2 letter abbreviation.

Need to target dropdown field to validate based on css class assigned.

Target dropdown contains US states.
Each state triggers a gorm_confirmation to redirect to site_url(CUSTOM) ELSE a static redirect url if no match.

Dynamically build site_url(CUSTOM) where (CUSTOM) = /2 letter state code (the value selected in the state dropdown field)

Match US state selected in dropdown on form 1 to the site_url(CUSTOM) and redirect.
basically matching the dropdown field value to the page slug for redirect.

To target this validation and confirmation I would like to add a css class to the field and thought the code below (found in the forum here for vin number validation) would allow.

1 - Tie our validation function to the 'gform_validation' hook

add_filter('gform_validation', 'state-redirect');
function state_redirect($validation_result) {

    // 2 - Get the form object from the validation result
    $form = $validation_result["form"];

    // 3 - Get the current page being validated
    $current_page = rgpost('gform_source_page_number_' . $form['id']) ? rgpost('gform_source_page_number_' . $form['id']) : 1;

    // 4 - Loop through the form fields
    foreach($form['fields'] as &$field){

        // 5 - If the field does not have our designated CSS class, skip it
        if(strpos($field['cssClass'], 'validate-vin') === false)
            continue;

        // 6 - Get the field's page number
        $field_page = $field['pageNumber'];

        // 7 - Check if the field is hidden by GF conditional logic
        $is_hidden = RGFormsModel::is_field_hidden($form, $field, array());

        // 8 - If the field is not on the current page OR if the field is hidden, skip it
        if($field_page != $current_page || $is_hidden)
            continue;

        // 9 - Get the submitted value from the $_POST
        $field_value = rgpost("input_{$field['id']}");

        // 10 - Make a call to your validation function to validate the value
        $is_valid = is_state($field_value);

Any help would be greatly appreciated!