modifications to word press web site ( development )

I have real estate website word press,, ( [login to view URL] ) the adjustment as below : A- Google map already configured with the website but I facing one problem ( the max drop in the map 40 drops only ) I need it to be open it for unlimited as the added properties in the control panel. B- Adjustment in the Control panel: To Change the below existing buttons or add new buttons with remove the existing one as you like 1- change ( SKU ) button to be ( Reference ) and make it Auto generated. 2- change ( Year built ) button to be ( Electricity ) And add this pic image ( ? ) and adding these options to the drop list A- Inclusive B- Exclusive 3- change ( Price suffix ) button to be ( Furnishing ) and add this image ( ? ) and adding these options to the drop list A- Fully Furnished C- Semi Furnished D- Non-Furnished 4- change (bedrooms ) button to be ( Hall ) C- the search engine options in the website: 1- Location: find some way to find the location better than the existing option 2- Numbers of rooms: 1 or to 2 or 3 or 4 etc. 3- Price: (I need to remove the zeros from the price options) ( if I need the range from 300 to 500 not 300000 to 500000 ) ( try to search in the web site by price and you will understand ) 4- Electricity: (the drop list A- inclusive B- exclusive) 5- Furnishing: ( the drop list A-fully furnished , B-Semi Furnished , C-Non-Furnished )