In my opinion when it comes to elk in Colorado, being seasoned isn't the main driver of success. I've watched guys who said things like "my family's been coming to this exact spot for 20 years and we always take home elk!" go home empty handed bitching about "the good old days" while standing 30' from newbies from Florida filling their cooler. You have to be prepared to work. And if you are, both units are probably fine.
Personally, I start EVERY research by looking for access. That's a huge deal especially if you're on foot. Both those units have plenty of public acreage but it's not always easy to get to. For instance, if you look at 24 at first glance it looks pretty broad and easy right? There's a road running right through it.... but most of the south side of that road is a huge tract of multi-million dollar mansions on big ranches with private gates, and the few N/S access roads off it get a lot of hunter traffic because they're the main routes "in" to public land. Depending on where you park you can expect to compete with a lot of hunters, many of whom have horses or ATVs to get around.
OnxMaps + the MVUM can be your friend here. It'll label all the roads that are passable by vehicle, as well as campgrounds and trailheads. Plan on them not being SUPER accurate - they're pretty good, but plenty of times I'll see a road marked only to find a locked gate there.
https://www.fs.fed.us/ivm/ is usually accurate, just a little clumsy to use.
Weather impacts things a lot. Bring plenty of gear. Heck, bring it all. This past season I went out Rifle 1 and it was 85 one of the days. My wife went out Rifle 2, 10 days later, and it was 13 or so her first day. And if it impacts you it impacts the elk too, so they can be high or low - you can't predict it until you're there. Good rule of thumb in my opinion is to plan to start high and work down.
Before I got into elk hunting I researched a ton. I read up on their habits, schedules, forage, and all sorts of data. To be honest, I never really found that stuff helpful. You'll get one source telling you to get as far off trail as you can because elk are crafty and know how to avoid people. But then my buddy watched a 5x5 walk right across a major trail right in front of him. I spent all of last season poking around the steepest, nastiest dark timber, draws, and canyons, which every guide says is "where the elk will be", but I ultimately took MY bull in a very open aspen clearing when I was barely paying attention anymore.
Then again, I guess a lot of what I wrote myself could probably fit the BS category. Best I can say is good luck