I've a Polaroid 800 I would like to eventually convert. I want to do it so it takes standard 4x5 film holders (and Grafmatics). I believe there are pack-film backs that will work in this manner, so you may be able to do both, as it were (but double-check my belief).
Anyway, I've not done this, but I think the pack-film conversion requires cutting some of the top and perhaps body just to make the holder fit. I'm not sure if this is also true of the 4x5 conversion.
Mine was my Great Grandmother's, so I will try to modify it in a reversible manner. If I can succeed, I'll only get the standard sized image for those cameras regardless of film-size. I've already loaded it with 4x5 film in a changing bag, though it's tedious to use in this manner.
As you prepare for the conversion, have you considered wasting some money and trying some old roll-film? It can be fun to use it as intended just for the experience. I have purchased some of the film on ebay and am batting 500 on it (though, as time goes on, I expect some regression to the mean, lol). I don't expect any of it to work, so I don't get disappointed.
Oddly, the older rolls that expired in the 60s seemed to work better for me (only losing two or three shots each), while rolls made in the 80s were more often complete failures. The best roll was older than I am

When the pictures turn out, they are not great, but I have gotten images, and it is fun. (I've also scanned the "negative" part and gotten better pictures from them than the positives.)
I suppose an Instax Wide conversion is another option.