Owner finance deal 1.1 million multi family help!

[Johannes Bezuidenhout]

This is my first ever deal getting into real estate I have the funds available to buy this. It is one lot that has been converted into 5 unit apartments in a very busy tourist area of Houston Texas . How do I approach this as fast as possible and how would I even determine the legitimacy of the value .. it will have no problem renting out as a short term leasing deal or long term. What would my next steps be I have given a contract with Ernest money and I have a period now to get the financials looked at he is currently renting the property and it is generating money . Any advice ?