I pulled out my Persuader to look at the spacing. Same 32 scale length you're talking about. It appears to be 2 at the nut and 2.5 at the 24th fret. This spacing is extremely fast for fingerstyle play, but is awfully snug for slapping. I could probably tolerate a little tighter spacing at the nut, but definitely no closer in the picking area.
I recently played a four string that was only 1.4 at the nut and that spacing felt wonderful. I didn't ask or measure in the upper frets, but it seemed to open up to be at least as wide as my five in the picking area. The incredibly comfortable feel of that bass is the primary reason why I am considering making the leap back to four string.
I think I will either have to get back to Santa Rosa when your bass is getting close to ready, or will have to hunt you out once you receive it. At least, that's what I'll do if I haven't ordered by then.
I hope it fits you perfectly!
-Bob