You will want to keep all the Omega lens cones and lens plates. Decide which column you like best, mount it on the best baseboard and put the better condenser head on top. Take the lenses off the Beseler boards and mount them to the appropriate Omega plates or cones. Negative holders for the D series are very plentiful you can collect all that you need and many that you don't need for not much money.
Get a few spare enlarging bulbs while they are still available.
Lenses from 50 to 105 mount on the flat plates. 40 mm may need 421-026 Recessed Mount. 135mm mounts on the 2 3/4" cone and 150mm mounts on the 4 1/2" cone.