welcome, liam. great to have you. there are a handful of us over here on southern vancouver island but only a few on the lower mainland. bruce (aka tough tercel) is over in your area. he has been a huge help to me a number of times for parts and what not so if you need help finding some obscure part, you should look him up on here and send him a private message using the 'PM' icon.
your camping mod for the back looks great. really simple and effective. can you post some more pics of it? too bad the back bumper sticks out so far, it means you have to lean forward to use the table top. if you added a part to your camping rack like a keyboard tray on a computer desk, something on tracks that slides in and out, it would make it more ergonomic and give you more work space.
like mark, i also wondered why your terc took so long to sell. one member in victoria said she spoke to the salesman but said he sounded shifty so she didn't pursue it any further. it looked pretty nice in the pictures. my advice, if you're interested in some fun, easy upgrades: get the seats, dash cluster, and inclinometer from an sr5 terc and swap them into yours. the sr5 seats are cloth and more adjustable. the sr5 dash cluster has a tachometer, which is super important to me. inclinometers are useless but so, so cool. all of these are really easy to swap, installing an inclinometer takes the longest but even that only takes a few hours.
on a few rare occasions, i took my terc up to 115 or 120 km/h. i had no problems but i don't usually drive tercs like that because the engine is screaming at about 4000 rpm then, and fuel economy gets exponentially worse past about 100 km/h. it sounds like the tires could require balancing but if you know your CVs are worn, i would replace those first and check all the other front end components while you're at it—ball joints, tie rods, sway bar and its end bushings, etc. the sway bar and its end bushings are especially crucial to check because that area is prone to trapping moisture, rusting away, and the ends of the bar can snap. i posted a guide on checking/replacing those bushings so check it out here:
https://tercel4wd.com/forums/viewtopic.php?f=7&t=7481
note that the metal sleeve and end bushings are only available through toyota, and pricy, but they're extremely important.