Negotiating a NNN Lease Renewal

[Chris T.]

I own a STNL retail property with a national tenant currently on an absolute NNN lease. At the next lease renewal, they have a 5 year option with a 10% increase (two renewal options left total). The lease states that they have to give 120 days notice prior to the renewal date, but I would like to begin the process well before then. My goal would to ideally get them on a new lease with a 10 year term. In seeing similar properties with the same tenant they seems to be signing 10 year initial term leases with 7.5% increases every 5 years. The value in a 10 year term (better refinance rates/sale value) would be worth it to me to drop their rental increases to 7.5%

My question is, is this something I could realistically handle myself (with a lawyer of course) or do large national tenants really want to deal with licensed brokers?    If it is something I can approach as the owner, how far out are companies looking when it comes to renewals?  If there is additional value using a broker, how best to find a leasing broker that has experience with a specific tenant?