Does this look right to you?
No..
the bungie does not go through those bullet blocks.
The bungie is simply to add tention/pressure to the boards to help keep them in place (either up and or down). This is especailly needed when putting the boat on the beach and trailer to stop the boards from dropping down and getting hurt. Even though i have bungies.. i still tie my boards up for getting on the trailer and for the drive home.. the last thing i want is to drag a board for 5 miles.
the bullet blocks guide lines to slide the center boards up and down (a great feature to be able to drop both boards with a pull on 1 line, or slide both up when hitting bottom.) Just add thin lines (not bungie) to exactly how you have the bungie run presantly (but NOT under the tramp... you will have slack in the line when the boards are down and you DONT want to drag that line. TRUST ME, WE SNAGGED A CRAB TRAP DOING 20+ on a line under the tramp..... not good).
Some people dont use this and remove the bullet blocks to keep their boat cleaner (less lines) but i love this feature.
I think you have the right idea in general... but you can use much lighter line on the jib outhauls... plus it looks like you have 3 lines tied together? i think it would be bad to have one untie while underway.
I also run a bungie between the jib blocks to pull them together.
i dont know about your extentions... seems funky to me... I cant imagine that you need your jib that high of your deck. I sail with 5 other mystere's locally and many others who use barber haulers and i have never seen any one extend them ...but if it works for you then great.
Your jib looks to be to far forward... this is actually determined by the cut of your jib... your leach and sail foot should have even pull for most upwind conditions... and i bet you can slide back your adjusters (the slider on the rail)... but depends on the jib cut.
Here is how the bungie goes
PS great looking boat!