You did a super job, congrats, did some of it to my old ps 190 jear 1991 some years ago, will try to find pictures to share. Although I did not have to replace the motor (ford mustang v8) I have redone the electrics (2 batt. Setup), new gauges (took also faria) and dash (stainless steel, laser cut outs).
You should consider ading a tower. Seems that you have an elastic rope which makes wakeboarding not that easy. Where do you fix that rope (at the pole) and how?
On that river and with that boat you should go for a testdrive with mono as well as barefoot (try to build one of these barefootbooms).
Also, Perfectpass or Zero Off would be a nice add on, a lot more quality of the pull!