Assistance with layout.

Hi and thanks for your purchase.

1) To correct your layout you need a minor CSS tweak. Add this to your theme style.css file.

.post-type-archive-property #content,
.single-property #content {
	padding: 30px 30px 30px 30px;
}
.post-type-archive-property #content,
.single-property #content {
	padding: 30px 30px 30px 30px;
}
.single-property #content .breadcrumb {
	margin: -30px -90px 30px -30px;
}

For full customisation you can use the templates as a base to create your own from and move things around with this guide.

2) Picture did not come through, Guessing you want to modify the drop down list. There is a filter here
http://easypropertylistings.com.au/docs/modify-listing-categories-filters/

3) Yes you can define the post type slug ‘property’ with this guide. Be sure to re-save your permalinks after adding this.