It's good that you have a local manufacturer that you can support and get advice from, but unfortunate that you still don't have the main components of your system. The shortages affecting them are worldwide, and even in the US, there is a fair amount of frustration over availability.
I think that each of your three possibilities is valid, but they are all quite different, and it's not going to be easy to choose between them (probably impossible for us, but even difficult for you). It's hard to know how to expand or augment a system when you don't have any experience with it to know what you might feel is lacking.
I also understand that this is a purchasing opportunity that you may not have again for a while. One way out of the bind could be to try to get some modules on this trip that you could start using immediately on returning home. That rules out (2). You could combine (1) and (3), by getting Pam's, a sample player, and something "tactile" (and, depending on budget, something more to support those). You could get some experience with those, and they would not be rendered superfluous by the Lizard system arriving.