New ADFS Server instalation

Hi All

I m planing to install new adfs server in my environment for 3000 users to access some 3rd party application (They (3rd party company) need adfs xml file

For this i planing to do the two server instalation ADFS Proxy(in DMZ) and ADFS Server

For this requirment I m not able for fine best guide to follow , all guide they useing LAB environment.

PLS provide me best guide and best practice do this

Hardware software everythings ok, also I can get the 3rd party certificate also

I m using inhouse Ent CA  and AD

Thanks

Srilal

ITS@JKH