I would use Gardz instead of BIN. You may also want to give the walls a quick sand before priming.

I would use Gardz instead of BIN.

Absolutely

Here is a link that might be useful: gardz

I always use a heavy-bodied oil primer like Moore's Fresh Start (not fast-dry) on old plaster, all the more if on old wallpaper paste residue.
If there are nubs of stuff still stuck from washing the wallpaper residue, you could give a once-over with a sanding sponge or pole sander to knock them off, or just sand after priming.
When you pick up a gallon of that primer, you'll feel how heavy it is; that's the solids, it's a high-fill/build primer, and it's sandable if you need it to be, like if you want super-smooth work.
Casey

Posted by europaintjohn (My Page) on Sun, May 30, 10 at 16:22

If this are real plaster walls and not skimcoat over board I expect they are very thirsty. The classic procedure is as follows:
... Pole sand walls with 150 grit paper till uniform. Not a serious sanding but rather a good scuff.
...Wash walls with solution of 1 part white vinegar and 3 parts warm water. Feel free to use mop.
...Allow walls to dry for at least 3 days
...Prime walls with real oil primer such as Oil primer from Fine Paints of Europe. Apply with 3/8th nap roller and allow to dry overnight.
...Pole sand walls with 220 paper till smooth before painting. If primer has been absorbed into plaster you must apply a second coat of primer in order to obtain uniform film build before painting.
Call experts at Fine Paints for furthur guidance.
This "guidance" is all well and good for selling your product but it is not necessary to put oil on the plaster.Gardz does a fine job, much, much,much,cheaper and it is NOT oil.