I also am a 5 string player. I have converted many of my 4 string basses to BEAD. The Fender nuts seem to usually accomodate the 130, 105, 85, 65 string set without modification. Worse you have to do is file or sand the groove a little bigger side to side.
In one case, I had to drill out the hole in the bridge for the 130.
I buy 5 string sets, and just dont use the 045 string.
Total string tension for the 130, 105, 85, 65 set is almost identical to the standard 4 string set.
Go do it
Carvin PB5 / BC Rich USA / RIC / Warwick / Gibson / Lakland / Fender / B-E-A-D / VT Bass / Ampeg SVT / REDDI