Scope and Rail on Diana 35.

Is it safe to put the following on a .177 Diana 35 thats 40 years old, it has a scope rail.

Leapers TS 4x32 AO Mildot scope

Leapers mount for RWS, the one here http://www.pyramydair.com/cgi-bin/accessory.pl?accessory_id=2297
(this one is for the 48/52/54 not the 34 etc.) and

Leapers Accushot low weaver rings.

I would not want damage to the scope or the rail on the rifle.

In my country we have to live with what we get (at high prices) so it would break the heart and pocket if anything gets damaged.

Please advise.

Thanks

Point177