I don’t think there is anything wrong with a 2 or 3x system on a bike. Look at the trails you are going to be riding and take that into consideration. With long sustained climbs, and you’ll wish you had the 2x. While your needs and strength may vary, I always choose to go that route, plus, parts are cheap for older systems.
If you can, test on the trail before you buy. And as everyone as pointed out, air forks are a winner. You will get the best adjustability.
Check the back corner of your local bike shop and see what clearance models they have on the floor. You can get great deals from shops looking to move last years product. I almost always buy a “last years” special, new from my shop. I’ve saved 1000’s over the years by going that route.