Using a silicone spatula to spread the cream cheese paste will be quicker and neater than trying to do it with a spoon or knife.
Metric kitchen scales are an inexpensive yet invaluable gadget to enable accurate measurement of ingredients. Store them upright in a cupboard or over your worktop and they'll only take up a tiny bit of space. Click
HERE for the ones I use in the UK. For U.S. option click
HERE.