I wouldn't buy a 30-year-old anything for a first bike. I'm assuming you want to ride, not wrench on the bike as a hobby?
Local guy bought a KTM RC390 and let me sit on it. Now, I'm not small- 6'1" 235lbs. I had plenty of room on that RC390. For a first bike, you want something that will let you push the edge of your envelope a little, develop your skills. A 500lb bike with the suspension technology of 30 years ago isn't optimal for that. Get something like that RC390, find a road with a lot of curves..... you won't be bored, believe me, and you'll learn some skills.
Oh, and after you've been riding a few months? Take an advanced rider course, and then go even further and take something like a Lee Parks' total control course. Learn some real skills, not just how to ride fast in a straight line.
Oh, and that GS500F? A late model one in good shape is much preferable to a 30 year old VFR.
2003 Triumph Trophy 1200
2009 BMW F650GS (wife's)
2012 Triumph Tiger 800
2018 Yamaha XT250 (wife's)