Superblast + Novablast or 2 Superblasts?

Im about to go to japan soon and Im planning to buy shoes for my rotation particularly the superblast because its not available in my country. Im about to retire my current daily soon and Im looking to replace it.

Initially I wanted to get the Superblast for long/speed/marathon shoes and the Novablast for daily runs. But since Im only going to be in Japan for a short while and I wont get another chance to buy the Superblast for a long time, im thinking why not just 2 superblasts? I know both SB and NB kinda overlap with their use cases so theyre still gonna be used properly. Im also fairly new to running and im not that fast yet so I wont benefit much from super shoes.

Is this a good idea?

Price is not an issue since both shoes are fairly cheap in Japan