It is possible, but you will most definitely have to run aftermarket standalone ignition of some kind as there is no distributor hole.

Im starting to think a distributorless ignition might just be easier and more feasible for the future especially since I may have a more urgent need to go carb

As Malcolm said, with some creativity anything is possible. We are using MPi blocks in our two Travellers using the crank sensor with distributorless ignition. We are using the Specialist Components setup , but other are available. One car has an HIF 44, the other SC throttle body injection. Terry

Yes it can be done and it will not affect the rest of the car. Jap spec MPI's are a bit of a hybrid as they have MPI crank fired ignition but use the earlier SPI throttle body not the later dual injector set up. With the engine out you can remove all the MPI/SPI and a/c wiring from the loom to tidy everything up, normally you could take a non MPi loom and fit it but the MPI steering column and fuse box is MPI only. If you want to just change the front loom to the earlier carbed one you will need to change the fuse box and column or get really creative.
If you do not like the air bag steering wheel it can be changed out using a MGF boss from the UK, the MPI column has different splines than all other Mini's.

h_lankford.. I think I saw this in miniworld some time ago.. better off just dropped a carb 1275 in the MPI. and be done with it. I am told.. later bc

Well if i swap to a carb I’m likely building a complete motor not just swapping out on my current motor. I plan to use the car a few times a week 3 seasons of the year for now. Once that novelty wears off I want to have a complete motor to swap in already built. So my only real issue is making sure the rest of the car (98 japanese spec) can be run without the need of a computer. Outside of the lack of a distributor I’m assuming my car is like any other spi and that can be accomplished  of course at that point I will be ditching the AC

I test drove (for a friend) a FI mini that had been converted to carb and two mechanics had worked on it unsuccessfully. 
Would die at any idle speed below 3000.
Was told by the third mechanic that the cam profile and/or cam timing for FI was altogether different than for carb engine.

yes.and   it is quite easy.. the SPI to carb is easier swap.   I have NOT done a MPI to carb swap.. later bc

So I purchased a very nice car with a MPI block/spi injection lets just say it was swapped in. the car is very nice with less than 60k km and is at a specialist being sorted out currently to make it completly reliable. Some day down the road I’d like to build it into more of performance car. I have an engine builder who is very familiar with building these motors in carbed form and a friend with a spare block or two. Would it be worth it to build up a motor now with the intention of swapping it in the future. Carbed of course or am I better off just starting with a fresh car for this build I’m planning on starting the engine build in the next few years as my builder is nearing retirement. I’d like to make at least 100hp without a turbo. So my main question is it possible to swap to carbs if I build up a  block with a provision for a distributor