Re: Leaders and Tippet Material
It sounds like you did very well. Your leaders should last a long time, I'd probably start with a leader tapered to 5x on the 4 wt and just add a 2' length of tippet in either 5x or 6x since you'll probably be throwing smaller flies with it.
For the 5 wt outfit I'd probably go with a 4x leader to the fly line and a short section of either 4x or 5x tippet if you were also going to be mostly throwing dries with it.
As you probably already know, you can figure out the X size tippet to use based on the size of the fly, where hook size divided by 3 = X tippet. So a size 12 fly divided by 3 = 4x tippet. Size 18 use 6x, 16 gets 5x, 14 gets 5 or 4x etc. Not too critical with panfish, you can get away with using heavier stuff, but for trout where you're more concerned about presentation and drag, it's a bit more important.
If you're happy with your 5 wt wf floating line, you might want to consider putting a 5wt wf sink tip on your spare spool to be able to cover different water depths. It can be deadly with a streamer in pools, ponds and lakes for trout and bass.
Sounds like you got a good deal, and a fine assortment of flies. You might want to add some dry fly floatant (about $2-3 for paste type DAB or Gink stuff, or liquid bottles where you plop the fly in and shake.)
Good luck. Looking forward to a trip report.