Hi Darryn,
Welcome to TRF, we are glad you jumped in here with questions.
Making your own motors is more difficult than it might seem. It is easy to pack chemicals into a cardboard tube. It is not very easy to get consistent thrust levels and total impulse, and without reliable motor performance, it is also not very easy to get good rocket flights. Making motors with good thrust-to-weight requires high-quality casing materials, and black powder motor construction also requires special tools which are usually quite expensive.
Rocket motors use some powerful chemicals, and in many places these chemicals are considered to be "dangerous" by the local authorities. You may learn that a large amount of government paperwork will be required to own and store these chemicals. Also, in many places, construction of rocket motors is classified as weapons manufacturing (I'm not kidding, the government often gets that stupid) and you can guess what levels of regulation you would encounter. Be careful; don't get yourself sent to prison.
You should know that the motor ratings (such as "A" impulse class) follow a system established by the National Association of Rocketry. Here in America (and a few other countries) we use these ratings, but things may be different in your town. You might find similar 13mm motors (or something close) that you can also use.
It's great that you are interested in using Estes motors, and I hope they are sold in stores in your part of the world. You should be aware, however, that other good motors are manufactured in Europe and China, and you may have some more choices available.
Also, some of the Estes motors you listed do not have a high level of demand, and not very many stores here in the U.S. carry them in stock. We have to order them by mail in many cases, and if you have to do the same thing this could make them very difficult (or expensive) to purchase. You may want to see what motors you can purchase before you decide what rocket kits or designs you want to build.
There are instructions for building many of the old Estes and Centuri model rockets available for free at:
https://www.spacemodeling.org/JimZ/estes.htm
https://www.spacemodeling.org/JimZ/centuri.htm
And there are more free plans for competition model rockets at:
https://www.nar.org/competition/plans/competitionplans.html
https://www.nar.org/competition/plans/duration.html
https://www.nar.org/competition/plans/altitude.html
And remember that all of these plans can be adapted to different sizes, to use whatever motors are available.
I hope some of this information helps you. Come back to TRF often, and post some pictures of your new rockets!
