My single turbo Wayfarer Ute build

Sounds awesome mate, keen to hear the results!

Wastegates work best when you have the closest Possible springs to your desired boost level fitted. But remember you can't run less boost then what springs are in there.
Your boost reference gets fitted to the barb on the side, so when the boost overcomes the spring pressure it lifts the diaphragm upward... The top one is used when running elec boost controllers and can hold the wastegate shut tight until it's told to open up... Bit more complicated.

With the msd.. I'll do my best to explain. Make sure the dizzy is locked. And you need to drop the dizzy in at the MAX timing you wish to see.. So a good start I've found for a sb mopar is 30 degrees btdc.. The 6530 will pull timing out but cannot add it, hence why you need to drop it in at your max timing.
So find 30 degrees on the balncer, line #1 up on the dizzy and drop it in.
Open up the msd software and find the start retard curve.
It come up as a graph, on the vertical axis is the timing.. Remember 0 on the graph is your static 30 degrees! I normally pull down to 15 degrees to help with start up and prevent kickback etc.

So in one of the tabs up the top find the "add a dot" and click it. Put a dot on 15 on the vertical axis and 0 on the horizontal.

The horizontal axis is your rpm.. So I program the msd to hold the 15 degrees until just before your idle speed (say 600rpm) then it goes back up to your 30 degrees.

So add another dot, and place it on the 600rpm on the horizontal and 0 on the vertical. So you should have a rough 45 degree line from 15 degrees to 600rpm.. If that makes sense lol.
And whenever you have done anything your happy with you MUST press the "copy to msd" button or it won't work.

Pulling timing with boost is a lot more complicated to explain in text, but I'll try my best when the time comes. If you plan to use this feature make sure you get a 2 or 3 bar map sensor, as they read atmospheric pressure (which is pretty much 1 bar) the 1 bar sensor is already maxed out! And is only good for n/a purposes

I hope all that jibber jabber has helped you in some way lol