Workflows on start on creation dont fire after event reciever

Hi I have used an event receiver attached to a list, which when an item is created it creates a sub site. Now if I create an OOTB workflow through SharePoint designer that runs on creation that doesn't run unless I manually start it.
I've read this post stack exchange which says that I need to specify the order, can anybody explain how I add that to the code?

Is there another way of doing this so that I don't have to specify each workflow? otherwise every time a user adds a new workflow I will need to edit this event receiver and republish?

here's the code I'm using:

public override void ItemAdding(SPItemEventProperties properties)
      {
          base.ItemAdding(properties);

          // Get the web where the event was raised
          SPWeb spCurrentSite = properties.OpenWeb();

          //Get the name of the list where the event was raised         
          String curListName = properties.ListTitle;

          //If the list is our list named SubSites the create a new subsite directly below the current site
          if (curListName == "SubSites")
          {
              //Get the SPListItem object that raised the event
              SPListItem curItem = properties.ListItem;
              //Get the Title field from this item. This will be the name of our new subsite
              String curItemSiteName = properties.AfterProperties["Title"].ToString();
              //Get the Description field from this item. This will be the description for our new subsite
              string curItemDescription = properties.AfterProperties["Description"].ToString();
              //Update the SiteUrl field of the item, this is the URL of our new subsite
              properties.AfterProperties["SiteUrl"] = spCurrentSite.Url + "/" + curItemSiteName;
                 
              //Create the subsite based on the template from the Solution Gallery
              SPWeb newSite = spCurrentSite.Webs.Add(curItemSiteName, curItemSiteName, curItemDescription, Convert.ToUInt16(1033), "{8FCAD92C-EF01-4127-A0B6-23008C67BA26}#1TestProject", false, false);
                 //Set the new subsite to inherit it's top navigation from the parent site, Usefalse if you do not want this.
                 newSite.Navigation.UseShared = true;
                 newSite.Close();
              
              
           }
      }