| jerryjg, your bass isn't considered extra long scale. What Gibson used to call 34 1/2" scale is the same they now call 34". If you measure from the inside edge of the nut (fretboard side) to the center of the 12th fret and multiply by 2, you should get just over 34".
Which model do you have? If it's strung through the body then you may need extra long scale strings,depending on the string brand. If it's a top load bridge, you'll be fine with regular long scale strings.
To me, the easiest strings on the fingers are D'addario XL nickel rounds. And you might want to try them in a light gauge like the EXL170 (45-100).
IMO, flats are not easier on the fingers, they're smoother but feel a lot stiffer. And even the brightest flats are relatively dark and often get lost in the mix, especially in a rock band. You can get nylon tapewounds in extra long (if you need them) through Carvin, but again, the thick tape makes them feel stiff, and if you're looking for any brightness or cut, they won't do the job.
If you're a guitarist and you're used to nickel round guitar strings, the D'addario nickel rounds in a light gauge should be easy to get used to. | 
