Should I be asking to have an inspection or is this something that is not done for a wholesale deal. 

Unless you have a background in historic building restoration I wouldn't recommend that.That being said - definitely get an inspection and try to find an inspector familiar with old buildings. 1920s buildings have different common pitfalls to check than 1950s buildings and 1990s buildings.

I have so many questions to ask the listing agent but however seems he doesn’t want my offer because he is selling “as is- non disclosure” and did not respond to my request for a 14 day inspection contingency.

Is it necessary to plan the annual termite inspection plans or can I drop them?

Go and physically inspect properties in your chosen area. 

Get an inspection, make sure you don't need any major repairs and scrutinize the rent roll.

And because $462 is well below the best practices for contingency savings, you should expect to fund emergency expenditures out of your own pocket if they arise early on.This is where a thorough inspection comes into play.

Chances are if something bothers you it will bother your tenants17.Don’t be cheap, get the inspection done, you’ll be glad you did.18.

Please fill me in on what to expert IRT my asking price and if there are any items I should be aware of come inspection day that will affect my rental rates.

Subject to inspections.