Celeste

I recently purchased a 1981 Toyota dolphin with 40,000 miles on it. Taking it from Idaho to texas, avoiding moutains....carrying 12 wire crates with animals in back. Do you have any advice? Never driven an older vehicle this far and I'm not sure how strong the engine is. I've seen plenty of good comments about the 22re...but not the 22r...any advice would be appreciated. Thank you.