The two piece bottom will def. Help with the strength more and more as it comes together it is starting to look good the bottom will be set on a 1/4in leveling mat as per @Projects with Sam advised. The sides will be super easy to conquer as well with having the channel found a new way of doing the interior seal as well that is going to be a huge help. Did it with the reseal of the ato and helped out tremendously.Wish I saw more built like this