As soon as you start cracking into it, you'll be fine. I'd try not to go too overboard with all the tools though. You can do a lot with a little! Focus on one car at a time the most important one. I'm looking forward to watching the progress, you'd be surprised how many guy's in their 50's still have the drive to restore old cars!
Good stuff on the replacement panels! Muscle car parts and Automotive Panel Craft, both in Australia make replacement panels for the 1600's! Pricey, but they're top notch and if you need to completely replace a part, then they'd be hard to beat!
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Ongoing Project: 1972 Datsun 510 S13 SR20Det.
http://ozdat.com/forum/viewtopic.php?f=33&t=17898
New Daily: D22 Navara (The new workhorse)
Retired 12/2016: MY98 Subaru Impreza RX
Previous Car: Restored Green 1972 Datsun 510, Hot L18