He has a good point but I would add some things. With proper perching your bird may never need a nail trim, but if he already needs it it cannot be ignored. I understand the trust issue. In general I am all for doing it yourself, but in this case, if you have a friend or two with bid experience it might be best to get them to do it if you trust them. If not. A groomer or vet can do it for a small fee, thereby postponing the need for you to do it until the rust is better established.
As far as perching, the edible perches, cement perches, etc are good. I prefer lava stone. Be careful though, because they can rub the skin dry on the foot, and even cause sores. If you have enough perches that are big enough that the claws hit the sides of the perch instead of the bottom, the nails should stay trimmed as long as the perches are rough natural wood. Btw, this describes the kind of perches your bird should be his anyway. The feet should not wrap around the perch at all, and the perches should. Never be dowel or smoothie wood if it can be helped. One rope perch high up for smelling is acceptable but not necessary, and the roughed perch should be placed either by the food or in your birds favorite spot.
Note about trimming, unless your birds beak is legitimately. Overgrown, NEVER get it trimmed! Some people, even some vets will suggest this and it is cruel, dangerous, and totally unnecessary. If your bird does actually have an overgrown beak, that is a sign of SERIOUS ILLNESS and needs the immediate attention of an avian vet, not just a vet who sees birds. In order to insure your bird does really need a beak trim, never allow it. To be trimmed. Y anyone but the vet who can diagnose and treat the underlying cause before getting it trimmed. I know you didn't ask about this, but often beak trims are promoted as what you should have done when you bring your bird in to have his nails done. Do. Not. Fall for this!
Best of luck, and bravo for being aware of both your birds physical and emotional needs.