not sure about price for blocks mate but you want a 4 foot level, stabila are what we use but they are expensive ,so if i were you i'd get a stanley or draper or one of the cheaper stabila but it wants to be 4 foot, any of these will be fine you'll also need a trowel , lump hammer ,bolster chisel ,tape measure ,string line and a length of 3" * 2" thats straight for using with level think that covers it if you have any questions give me a shout and i'll try and answer them for you