Welcome to the site man.
For a first car, being a 16 year old, I would highly recommend the Solara (or similar) over the Supra... It ain't a race car, but it's a solid performer (V6 models), and it's safe, dependable, low maintenance and low cost to drive.
I would never advise any first car buyers to purchase any Supra, especially a 16 year old... I currently have a MKIII as a daily driver and I HIGHLY advise against even that for anyone who doesn't have a bit of money to throw around (no matter the age). Even if you do the work on it yourself, you may have to shell out some hefty dough to rent a car while you retire the Supra for weeks on end to work on it. They're high cost, high maintenance cars that are expensive to repair and will skrew you left and right if you don't repair them properly the first time. Not to mention the newest MKIIIs are now 15 years old, and most have been beaten to hell.
Stick with the Lara or similar (Accord V6, Maxima, etc...) and you will be much better off. When you have a bit of money to throw around and a dependable main vehicle, THEN go for the Supra.
My $.02.
-James
PS--->I forgot to mention the blown headgasket syndrome!