I agree, go for the Rick. I have a '72 and love it, a '73 is almost the same except for details that matter more to collectors than to players. And like others have said, you can easily get your money back out of it, especially if it has only a "tiny bit of wear and tear."
There's a pretty good chance the pickup issue is nothing more than some corroded switch contacts. There are two jacks: one is "Rick-O-Sound" (a stereo jack with one pickup on each channel); the other is a mono jack with a switch that connects the two pickups together when you insert a plug there. If the bass has been in the storage unit for a while, the contacts probably are corroded, so you only get one pickup.
Check out Pickguardian for a new pick guard. And in the unlikely case that a pickup actually is bad, RIC has them.