Mike-
When I ordered my short scale bass, it was specified with 40-100 strings. There was a late inlay addition that interrupted the build process and caused it to be taken apart and restrung. By accident, it was restrung with the standard 45-105 short scale strings. When I played the bass, I thought they actually were the narrower gauge strings. These are, however, steel strings, not nickel. It is extremely easy to play, though it was a little clicky for the first few playing sessions. The strings have since broken in quite nicely.
Even if you're looking for nickel, you will find that a 45-105 set will be as easy to play on a short scale as a 40-100 set is on long. You may have to raise the action or play with an extremely light touch to avoid much buzzing on lighter strings at short scale.
If you were to tune your 34 scale bass down by between 3/4 and one full step, that would approximate the tension you would get on those strings at short scale. Just something you can try while you wait for the custom to help you decide for certain about string gauge.
-Bob