I'm considering purchase of an Omega d2 enlarger for use for my 35mm up to 4x5 negs.

How easy is it to find parts for these? Specifically I will need lensboards as this one does not come with them.

Am I correct in thinking that I need the bell type for a 135mm lens?

Are bulbs still readily available? Anything else I should be concerned about?

Thanks for your replies.