Hi, and welcome to this great forum.
A few points to consider when going out the first time with a new klatch lock, a screw driver to tighten the screw that holds the flint, these screw slots are often very fine ( narrow ), fire a blank ( no ball needed ) to dry out the bore and to lightly soil the barrel, if not your first ball will most always be off center to the rest of the group.
Spit patches are ok, if you shoot immediately after loading, but 15 minutes later, they are dry, and afford little help in keeping your bore crud soft between shots, so, a lightly oiled patch will work wonders and give constant results between shots.
When shooting from a regular shooting position ( not on a woods walk ) a small bottle of soapy water really helps in keeping the smokepole ready for the next shot.
In reality, there is only so much junk, that you can carry when going for a shoot.
What I have found really handy for the shooting bench ( not on a woods walk ) is a small tool box with all your shooting needs. ( I will try and name a few: spare vent prick, flints, screw driver, cleaning patches, even a spare collapsible cleaning rod, small bottle of soapy water, a few spare balls, also a check list)
Your shooting bag will often carry most of what you need, but it really spoils your day, when you travel a good distance ( 1/2 hour drive ) get there and realize you forgot something, and have to return home to get what you need.
Now remember, you are getting this valuable advice from a 70 year old who travels at least 10 miles a day back and forth to get something he left at the back door, that he needed. I WROTE THE BOOK ON BEING ABSENT MINDED
More than once, I got to the range without my ramrod.
If you need any tips on how to recover what you left behind, you can contact me.
You DO have a copy of Dutch Shoultz paper on successful shooting the black powder rifle??? Get it!
Have a great day!
Fred