This is a subject I usually like to give my 1½ (Canadian) cents on, so here it is-
Upgrading to 94's, which does work, is a lot of work for not necessarily a lot of gain. For someone's first major engine project I'd say go for it (great experience) but I know you're waayyy beyond that. Lots of people have used the 94's with the bottoms of the barrels thinned down to fit in the 90.5/92 case register, and as Danny said, you just have to be careful to not damage the cylinder bottoms.
I like the idea of splitting the case, since it will be out of the car and you already have the heads and induction to make it make some fairly serious power with significantly more displacement, a 2110 is pretty easy to do. A hone on the barrels (provided there is a local machine shop) , new rings and away you go. You could use the rods you have- 82 mm cranks with either 5.394 or 5.4" rods have proven to be a great combination and should come out to very close to stock width, requiring minimum shimming, and with the W110 and adding 1.25 rockers it'll be a torque monster!
At that rod ratio (1.68) the pistons won't last forever, but you're not worried about that. If you go with Danny's route (5.5" rods) it only changes the rod ratio to 1.71 so either way works. It'll go to 5800 or close to 6,000 rpm with power and be killer!
Or- leave the short block alone, sell it or put some ported stock valve heads on it and put it under the bench. Since you're buying the stroker crank, start with a new case, 94's, an 86B or CB2288 (and 1.4's of course!), and with the Panchitos and a 1 5/8" Sidewinder it'll be a monster
! The only issue with be the combustion chambers- you'll need 58-60 cc's to make it work with .040-.050" deck height. What's the cc's in the heads now?
Hope this helps, Mike (or did I just muddle it up even more?)- Al
PS- I left the FK8 out of the recipe because Engle's cams haven't had the best specs lately- better to go with something that's a little closer to what they say it is.
Oh- and my apologies for the sinceitsapartitis- I have it bad!