The little Kadetlet looks good- I also like the shape of the tail on the kadet mk11, but that may be harder to make..
One thing that might be a boon to beginners trying this (or any) 'electronic' plan- where you download and print yourself- is a 'printwood sheet' layout. An image of a rectangle representing a 3x18 or whatever common-sized balsa sheet with the outlines of all the ribs, etc that are to be cut from that sheet might be helpful for a novice- and would ensure the grain is going the designer-intended way for all the parts.

I know a lot of people now make a hard rib template for constant chord wings, then do all the ribs from that- but I still do it the hard way, by making 'printwood' using a xerox copy with lacquer thinner rubbed on the back to transfer onto the balsa.

I like it,
clint