How many tablespoons are there in "a big bowl"? Depending on the size of the bowl, that could make it a rather huge number of carbs.

Redi-Whip that I know (in a pressurized tin) has sugar in several forms including corn syrup.

Why not get some heavy or whipping cream (about 35% Butter Fat) and whip it up with some Splenda or artificial sweetener? Fewer carbs, no preservatives - I think it's much better tasting than the tinned stuff too.