Property Management Software for 100+ Doors

[Hector Haro]

Hi gang. 

Can you recommend a management software for managing 100+ doors I tried Cozy. But I need a portal where 
I can do the following 
-Customize the tenant application  ( Cozy does not  allow me to customize)
- Have tenant Upload Pay stubs, DL, etc. 
-Signing lease agreements via portal
I am working on automating and hiring a VA to handle all advertising, applications, and lease agreements.
Allowing my onsite managers to focus more on the day to day

I looked into Rentalutions but I'm cheap!!   and they charge per door and not sure if they even offer everything that I want. 

So yes I want a software that offers everything that I want and dont want to pay much for it. 

Any suggestions would be greatly appreciated.