Hmmm....your arguements are not strong enough to persuade me otherwise.
The merit scholarship looks nice on paper, but you have to maintain the 3.3 the entire time. If you drop below it, you lose your scholarship money. You're basically making a $30,000 bet that you'll make that GPA for 2L and 3L. Now note that law school grades, especially first year, are nearly all dependent on one single test at the end of the semester. Plus, these tests aren't just wrote memorization exams that most people are used to, and many get caught off-guard by. If you happen to feel sick one day, girlfriend breaks up with you, somebody close to you dies... and you blow one exam, especially in the first year, and you drop below that 3.3 mark, then you've basically screwed yourself. Sure, DePaul is a good school, but you'll be back to paying full tuition for second and third year just as if you had gone to Kent.
Getting a DePaul degree for 15K less is locked in. Beyond that, assume you don't make the cut and you have to pay full tuition. If you're willing to pay full tuition minus 15K for the first year at DePaul, then I say go that route. If you maintain the GPA requirement, then that's just an added bonus and a little less stress in your life.
However, if 15K alone wouldn't be enough for you to choose DePaul over Kent, then don't even bother.
Plus, Kent will provide you with slightly better career opportunities. Isn't their average starting salary like 5-10k higher than DePaul? Sure, you might save 15K or even the full 45K now, but what do you cost your self in the long run? Kick yourself up an extra 5,000/year on graduation and extrapolate that through 5, 10, 20, and even 30 years down the road. You'll be 50 and wondering how much more you might have earned over your life-time, and if the choice paid for itself.
Honestly, just comparing the average starting salary of the two schools and how many years you intend to practice law should be enough to make a choice for you. According to http://www.ilrg.com/rankings/law/median.php/2/desc/MSPrivate
, Kent is 10K more a year in the private sector. So you're looking at about a 4-5 year break-even point. Plan to quit law in 5 years? Go to Depaul. Plan to make it a 10-20 year career? Go to Kent.