Get the option to add the cellular. Don't have to use it now, but at least you won't have to buy another device later on which you'll double-down on your expenses. I've done that too many times now with Samsung stuff sitting in the drawers that doesn't work well for DJI stuff and out about $1,200 too. Do it right and cry once. You think you get away with being cheap, but it comes back to haunt you later.
Also, if you do decide to throw in a SIM card later, check your carriers for their coverage maps for the area you intend to fly in. Some may not cover it, and then you are stuck unless you change carriers. I think the tablet I bought at Best Buy I needed to plan for what carrier as they seem to be made for the carrier's network and SIM card setup.