I agree with the 30# dacron backing. GSP backing will cut you if you are not very careful. Smart move.....leader; I use a 40# mono butt section of around 4'. Then a mono tippet of 8 to 20#. What ever the situation demands.....I also use a loop to loop connection through out. EZ and quick change if needed. I use a double surgeon loop knot in the mono.
....loop to loop will also work on the line to backing connection. A spider hitch works fine for the backing loop.