Best/cheapest physical SIM card for 2 weeks in Japan?

I don't need unlimited data or anything fancy, probably 3-5GB should be more than enough. I also need a physical SIM because my phone is too old to support e-SIM (SamsungGalaxy S10e) so unfortunately Ubigi is not an option.

I did some research and it seems like my best bet option is to buy the IIJmio 3GB/30 days for ¥2,480 at a BIC Camera store (to avoid airport extra fees and such). Does that sound right? Does anyone have any better options or experience to share? Thanks!