Specific addons

Hello,
I am currently in the process of building a Woocommerce based online shop. I am using the latest version of both Woocommerce and WordPress. In order for my site to have the features it needs in order to work, I need some specific options that are not in Woocommerce by default. I prefer to use plugins/addons instead of making the changes manually in order to make the website easier to maintain and to keep it up to date without having to remake changes everytime there is an update for Woo/Wordpress. The functions are need are the following:
1) I need to be able to put badges above the product featured image on certain products(things like free shipping/ free installation/ etc.)
2) I have a set of predifined HTML elements, that should display on products. What I need is an option in product creation, from which I chose which one of the HTML elements to be displayed on the product.
3) I need some type of form where the buyers can input their information in case they are interested in buying the product with a leasing plan.
4) Product options – what kind of installation they want and some extras they can add to the product. I thought of using variable products for the sake of that, but the variations become too much and also the products are not really variable – they just have some options that can be added to them, which alter the price as well.
5) Some of the products are just half of the product – you select the main part and based on that you have a different selections of the extra parts. I need these selections to be displayed with an image and some proper description. Again, making variable products is not really a solution.
Note: All these plugins/addons need to be fully translatable since the shop will not be in English.

I did some research on the topic and I found these two plugins:
https://woocommerce.com/products/product-add-ons/
https://woocommerce.com/products/gravity-forms-add-ons/

The first one seems like a simple way to make 4) work and the second one seems like a more complicated way for 4) but also like a possible decision for 2) and 3).

Since all of the options are paid and their is no real way to know if these add-ons will do the job for my site, I decided to turn to you for advice. What is your opinion on these two add-ons and do you know some other add-ons/plugins that can work for my case.
Thanks in advance for your answers.

P.P: The store is about selling A/C systems.
P.P2: The language of the store is a Cyrillic language.