Few tweeks on shopify

i want a small pop up box on my product descriptions showing the word "ingredients" and clicking will open a small pop up box or drop down menu showing the list of ingredients in that particular bath bomb, each one will have a slightly different ingredients list.
i have an example here however the shopify chat help people set it as a dropdown and a theme for me but its the same ingredients showing for each of my products!
https://bathbombdelights.com/products/blue-easter-bunny-bath-bomb

i also want spacing smaller between the lines of text on the yellow "subscribe to our emails" section at the bottom of my site so the yellow bar is slimmer

under that yellow section i then want to add some icons in a banner something like this ( see attached_and if i decide to at a later date i might want to link the images to a page. i have someone making up the icons for me at the moment

i would also like small arrows at the top of each of my products so if someone is viewing a bath bomb they can then click" back" to the prev bath bomb they viewed or to the category page and a click next arrow to see the next product in that category or maybe a view all option so they can view all of the products in that category from the product they are currently looking at. whichever u think would be best

please advise how long this would take and the total cost

thank you