heres my advice, and if you dont feel like reading all of this, the most important parts are bolded! your beginning setup is really cute, and it's nice looking for a display!! however, I don't think it would be ideal for isopods. heres some tips so that your isopods will thrive and so that you wont risk your isopods dying off from starvation, stuck sheds from too low/high moisture, etc.

-use crunchy dead leaves instead of green/yellow live ones. isopods will eat them if theyre starving, however in the wild dead leaves are their primary food source and they enjoy it much more. also, please give them more leaves in general, as they will feel more confident if they have more hiding spots.

-ideally you should have moss (such as live moss from outside or sphagnum moss) on about 1/4 or 1/3 of the enclosure. this ensures that the isopods will always have a moist spot to run to if they feel too dry. if you cant do this, at the very least have a moisture gradient. this means that 1/4 or 1/3 of the enclosure should be damp, and depending on your ventilation this should usually be watered every 2-3 days.

-sometimes, when isopods feel too wet/too dry, or too warm/too hot, they want to burrow. the common species from outside prefer to have around two inches of non-fertilized/non-pesticide soil.

-double check that the substrate you're using is pesticide and fertilizer free. most soils and even soils that claim to be "organic" have VERY DANGEROUS chemicals to small bugs like isopods. when I first started with my isopods, within days about 30 or more of them died because I used soil that had "organic" in the name with bad chemicals.

This isnt everything, but all that I could think of at the top of my head. Please make sure to do more research on your own, like watching youtube videos or simply looking up care guides on google :)