Tab and Slot Creation

I'm trying to develop a way to create a sketch that is a "tab and slot" but instead of drawing each step and going through and messing with all the relations, dimension etc., I would like to create a menu where I can define certain perimeters for the "line". Parameters in perfect world would be as follows:

Plate Thickness

Slot Width

Tab Width

Ive attached a couple files to hopefully explain better.

A block would work but sometime a may have a part 5 inches long or a part 36 inches long and sometime on an angle and rotating the block is just as time consuming.

Thanks - Craig

SolidworksSketching