Hello,
1) Provide us with screenshots of the issue because I don’t understand what exactly is not suitable for you. Use Lightshot screenshot free tool to share the screenshots.
2) Images take 100% with of the product block https://gyazo.com/16e400929a13d831045b4563b0ce1f37 + 15px of paddings between products. What do you want to make bigger?
3) The numeric value in the permalink could be if you did not add the title for your products. If the title is added it generates the title in the permalinks, as a rule, depending on your permalinks settings of course (Settings > Permalinks).
Regards