Hello,I am looking to purchase a SFH next year (in DFW) as a long term rental property investment and was curious about peoples thoughts on timing. I have seen posts/articles that mention end of year is a good time to...

If you plan to refi them all into one loan you will need a lender who can do a commercial loan but the terms will most likely be a 15-20yr loan with a every 5 yr renewal and rates in the 5.25-6.25 range. 

The standard 10% usually covers tenant management only - advertising, screening tenants, preparing leases and renewals, fielding phone calls from tenants, collecting rent and conducting evictions.  

Speak to all tenants involved and if the problem can not be resolved you have the option of evicting/non renewing the noisy tenants lease.

I ALSO UNDERSTAND THAT AT THE END OF MY LEASE, JOHN SMITH MAY OR MAY NOT ALLOW ME TO RENEW MY LEASE. 

       Property management company I used to use was late renewing our license. 

Or wait out the lease and give the required notice that you are not renewing.

I would lower it but make it a 4 to 6 month lease and renew or find a new person in better weather

After that, you renewal costs for fees should be less than $200 so it's not that expensive. 

Her lease is set to expire January 1st and we have given written notice that we will not be renewing the lease.