I owned many Laklands over the years as I always bought into the need-a-35"-for-a-good-B thing. They are great basses. I never even considered basses that weren't 35. I had played some absolute crap 34" 5-ers….
On a whim, I picked up a Carvin SB5000.
Fast-forward a few years and all my Laklands are gone, replaced by Carvins, including a B50 that has the same neck and construction as the PB series. I don't feel that I have given up anything in the B string, and the Carvins are more comfortable to play for me.
. Since my Carvin acquisitions, I have bought and sold off a couple of US Fenders, a US Gibson EB5 (
) and a Sadowsky Metro. 2 of those 3 are highly regarded 'status' basses, but the Carvins either outplayed them (Fender) or made the bass not worth the money it tied up (Metro. Sold it and paid for 2 Carvins).
If you do go for the PB5, as you stated, adding a bridge pickup is a good idea. I also recommend looking at the active electronics option. It has the SB preamp in it that allows for active/passive with a passive tone control. That allows for some crazy versatility, IMHO more than just coil switching. Go watch some of the Sekou Bunch videos on the Carvin channel where he walks through the preamp settings with an SB and you get an idea of what it can do.
Whether you keep your 55-02 or get the PB5, you'll still be holding a great bass.