Volusion website custom coded features

We host 3 websites on Volusion that need an update. We are looking for a quote for 2 features that will need to be custom coded on Volusion. The first thing is we need the logo in the top left corner of our website to be enlarged. The next feature we are looking for is a quantity field with a "+" "-" button next to the add to cart on all sub category and product pages. The attached image is a subcategory page showing where we would like the quantity field to go.