good morning wanted to know if...

Hello, we do not know which template do you mean exactly. Probably it is Directory or Business Finder. Both are very suitable to build any similar directory portals. Regarding ads - please check our documentation: http://www.ait-themes.com/doc/how-to-add-advertise... and of course you can decrease the sizes of the google maps height and width. No problem as you need more spaces for ads. 
I also would like to recommend you to check our showcase of business finder or directory themes - hope this will help also.
Kindest regard. Ait Showcase: http://www.pinterest.com/aitthemes/ait-showcase/