You’re not wrong; that’s a warranted concern. Early anecdotal measurements suggest that an amp clone uses roughly the same amount of DSP as an Agoura amp model. So pending further detailed specs it’s fair to consider them equals. So the question becomes: can you create a preset now using Agoura amp models that does what you want? If so you’ll likely be able to simply substitute the clones when you have them. If not you’re likely to run into a similar DSP constraint.
Another relevant point: some have wondered whether you can swap clones in and out in a preset using Snapshots. Specifically, would you be able to use your 3 clones in a single Clone block in the preset? The answer is no for the same reason that you can’t do that with amp or FX blocks. Each clone, like amps or FX, has its own DSP requirements that need to be calculated during preset construction. For instance, you can’t put a generic Reverb block in a preset and change reverb models using Snapshots.