Site compression, CSS & HTML restructure

I need someone to convert all images in my site to absolute minimum and combined images as one.

I need css restructure to load faster and edit html in order to load fast.

Bottom line I want the site to load 80% faster than now. ( Load time now 5.7 seconds )

I need keywords Intergradedinto every page ( No duplicates )

I need site map made

I need site robots made

 If you don’t think it’s achievable please don’t respond.

Payment well be made in 2 parts, first part at agreement and second part when job is done.