I would do a 331 stroker. You can get this kit with pistons that have the pin BELOW the oil ring land. 347 strokers have very short pistons with the pin in the oil ring land and oil consumption and piston rocking can be a problem. Probe has a 347 kit but I believe they use 5.315 rod and the rod to stroke ratio is even worse than a 347 with 5.4 rods. Don't get too hung up on rod ratios. Can the VMF community name a few well known engines that have WORSE rod ratios than the 347? How about the 455 pontiac or the 454 chevy.
Something that i'm exploring is the following combination: 3.25 stroke crank, 5.155 289 rods with 11/32 ARP bolts and shotpeened and small end opened up .015 and chromed for a floating pin, and KB322 351W pistons (designed for the 383W stroker). Rod ratio is the same as a 347 stroker setup. This combo gives the combined deck height of .015 below the 302 block (perfect for zero decking) and it uses a fairly NORMAL piston with the pin in the right place and a long skirt (less rocking and more area for the side loading to spread out on). The piston also provides a compression ratio of 9.8:1 when using 351W Powerheads (local shop that CNC ports iron heads and installs large valves). I'm just looking for a street car driven maybe a few times a week and occasional trips to the strip. I'd be happy with high 300s in HP and torque (uncorked) and RPMs that won't exceed 6500.
I'm investigating this setup with a local old time racer who's helping me with the engine. In the old days, they used to stroke 289s to 327s and they didn't have a lot of choices for rods.