your car porch already have concrete base?? if yes then price shall be rm6++ (normal no brand contractor) to rm15++(those branded co. like "bomonite" ).

tiles cost range from rm1.00 to 10.00 psf but most ceramic tile will be less than rm2.00 psf.
polished homo/ porcelain tiles from rm2.5 psf

beside tiles, how about cement, ADMIXTURES, TILE ADHESIVES, COLOUR GROUTS

labour cost "TO LAY TILES ONLY" from rm 2.00 to 3.00 psf

my tiler charge me 2.5/psf .........tiles, cement, tile adhesive, latex, sand by my own..... maxis 6636962

fixed

1 bag of sika top seal 107 + 4L liquid polymer cost only 90++ @ hardware shop, more than enough for 2 coats to normal size bath room floor and shower area wall.

so, u know how much more u need to pay your contractor

Why need 2ft space, i have done < 8", just enough to install down light

U may need to change the cable from external to DB to min. 25mm2