I shoot steel all the time and have about 60 pieces of AR500 and another 15 animal silhouettes for .22RF. We had a similar thread a little while back that may also have some ideas:
https://www.thehighroad.org/index.php?threads/who-is-shooting-steel.877413/
I'd avoid anything that "knock's down" unless it auto resets. They "brief well", but are a PITA to drive (or walk) out to reset. It's bad enough repainting periodically. I'd get bigger tgts than you think you need, especially if your background won't allow you to spot misses. You can always paint smaller bulls on the larger steel.
For what the OPs looking for I'd take a hard look at two portable stands that I use. One is made by Arntzen and is a very portable folding tripod system (the Arntzen stands are holding up the 2/3rds IDPA steel).
Arntzen has now gone out of business, but the stands are still being made by a different company, that Arntzen recommends:
https://madetargets.com/stands/
Another portable system I use comes from Hang Fast Targets and utilizes "T" posts.
https://hangfasttargets.com/
These are very cost effective and pretty ingenious as the hanger also acts as a wrench for the carriage bolts. You simply mount a 3 link piece of chain on the tgt and hang it on the stand. You can also mount them straight with carriage bolts, but they don't ring as well, nor do the "flash" when hit by off center shots.
T posts are cheap, and allow for varying the heights. The hangers are protected by the steel plate. When I put together rifle shoots for my friends I put these 6 or 7 of these out at varying distances. In about 20 minutes I can put out some pretty interesting CoFs from 200-600 yards.
Practice using my M23A1 MSP (Mobile Shooting Platform) which is a necessity during chigger/tick season in KS. Really a 5x8 trailer pulled by my UTV, which really is a requirement to carry all the chit we use to shoot; scopes, tripods, mats, stools and guns, sometimes an additional shooter.