420-
Not an expert but I am knowledgeable in plant genetics enough to answer your question, and the answer is not what you want to hear but: It depends.
If you are simply looking to preserve the genetics in some way, this will be fine. But you will not necessarily get exactly what you are looking for.
If you purchase a true F1 hybrid, the F2 generation is going to have much more variation, differing from your original pack. It is possible that you will find some similar to what you have seen, but not like your original pack.
If you purchase a more likely back-crossed hybrid of some sort (lots of cannabis breeders sell seeds as F1, but in reality it is an F-something backcrossed to the parents. You will end up with the same variability if not more in your seed generation.
If you purchase landrace seeds, this is how you can expect to find similar plants to your original pack. But remember, when you buy a landrace you are starting off with much more variability already.
If you purchase an IBL, in theory you should be able to cross any two plants, and you will get something very similar to your original pack. The problem here though, is loss of vigor. The plants have been inbred so much, with so little variation, that you can end up with inbreeding depression.
As for your clones, you can use colloidal silver, but you are still at the whim of the above situations. A selfed F1 hybrid is still an F2. This method will lead to less variation than the other methods, but it is still not perfect.
The best form of preserving genetics is to save an entire line, rather than a specific plant. The landrace example would be the best, as you make more and more selections you will be 'customizing' the line for you. In other words, picking the plants that grow best in your environment will eventually lead to plants that grow best in your environment. But also remember, the more you thin out the herd, the less variation you have, and inbreeding depression can occur, giving you plants with much less vigor. So choosing multiple parents will always be better, in terms of genetic preservation.