Image size you can change via Customizer > Woocommerce > product images (do not forget to regenerate thumbnails) https://xstore.helpscoutdocs.com/article/89-product-images
Title chars limit you can set in Theme Options > E-commerce > Products Page Layout.
Also, add this code in Theme Options > Styling > Custom css:
@media only screen and (max-width: 1600px) and (min-width: 768px) {
.content-product .product-title a {
min-height: 85px;
}
}
