What advice for enlistment options will you give for someone 29 years of age with a graduate degree?

You may want to think outside the box a little. There are other organizations. Start with DARPA, CIA, and etc.

Go qm

My first question to you is: why are you considering Enlistment over Commissioning?
As a person with a minimum of a BA degree you are eligible to apply for commission. If you are in need of Student Loan Repayment, then I understand, as SLRP is not often given to newly commissioned officers.
Be weary of any recruiter that tells you you can go cyber. It's a very low density MOS, hard to get into and you MUST have the passing ASVAB scores and qualify for a TSC clearance.
A direct commission into cyber/ information security is unlikely unless you can get a memorandum from a unit willing to give you that slot. You have to go to OCS and your branch is determined there.
Are you looking to go Active or Reserve?
You are more likely to get the aforementioned memorandum in the Reserve and be guaranteed a slot that way.
What benefits are you looking for? Are you in this for 8 and done or are you looking for a career.

You want to be a soldier or a computer geek? If you want to be a cyber geek, go to USAJOBS.gov, type in cyber and get a job. But if you want to be a soldier who happens to have cyber skills, go to the Army recruiter (no other choice, IMHO), ask for the cyber MOS. Get some schools in your contract. I recommend Airborne, Air assault, ranger, pathfinder and then possibly SOF. You will be Rambo with wireshark and the baddest Mo' Fo on the planet. How do I know? Because that's what I used to be :). Good luck.

Apply for a Direct Commission or OCS.

Chose either a Commo Warrant or Officer. Personally I liked my Commo Warrants they were an unbelievable asset.

Try to get into Army cyber. Once you get in, go Airborne, Air Assault and pathfinder. Also go to ranger school. Then join the 82nd Airborne Division to round out your bad ass profile.
It's what I would do....

best advice i can offer is if you have that 110 GT score go officer or warrent

It all depends on your reason for joining.
If you want to serve in your field and Student Loans are not an issue, I would look at a direct commission. (Generally, if you go straight commission you do not get SLRP, but may be eligible for tuition assistance)
If you need SLRP/ a BONUS/ and tuition assistance then go Enlisted.
If you want to maintain a job and serve locally, go RESERVE. If you want to dedicate your time fully, go ACTIVE.
Just remember, NO JOB IS GUARANTEED. however the ARMY is the only branch that allows you to pick your job before you enlist.
Even if you direct commission, you are not guaranteed a slot in cyber. Message me and I can tell you how to get a slot in cyber.

If you don't do ROTC/OCS you're a bloody fool. Put your degree to work where it can be of best use. If you want to be huahhuah still, compete for an 11A slot and come join me; I've got a grad degree as a 2LT, too.