This can make the premium unreasonably high.

Sometimes in the beginning, a tenant may ask for something unreasonable or perform in a manner that is not to my liking.

However, the rates/costs you were quoted don't seem unreasonable to me but granted, I don't know your entire situation.  

They still being unreasonable, wait a few weeks and contact again.

They might be willing to sign a petition against their unreasonableness.  

Another way to diversify is by having properties in various cities.Indeed, it is unreasonable to think California will double in 10 years, and property taxes in Texas are way higher than most other places.

Being able to march to the beat of your own drummer (success over time despite the temporary setbacks) no matter what the rest of the world thinks of you.George Bernard Shaw:  “The reasonable man adapts himself to the world: the unreasonable one persists in trying to adapt the world to himself.

3-5 weeks is not really unreasonable, it just is not good for your stage of construction.

It is important to point-out that none of the requirements or underwriting standards established by the Small Business Administration are unreasonable.

I think maybe you misinterpreted the idea of the "funnel", which basically means at every step of the process, you wind up with fewer houses after weeding out the losers. ie: it doesn't seem unreasonable that an investor looking for a deal may look at 100 houses online, drive by 30, analyze 20 in depth on paper, look at 5 with an agent, make an offer on 2, and buy 1.