Best approach for stable placement of model on ground in front of poster: Image target or World Effects?

Hi! I’m a university student who is brand new to AR, and I’m wondering which approach might be best for developing my site-specific project.

I’m trying to place a model of a virtual podium and microphone as stable as possible, on the ground a few feet in front of a large (real-world, 4-ft x 6-ft) poster. The models will never need to move during the experience, and the poster is a permanent fixture on the wall.

Should I attach the virtual models relative to the poster as an image target and leave it that way, or would it be better/more stable to initially place the models via the image target, but then hand them off to world effects so that they are attached to the floor? And if so, is there an example or tutorial for how I would pass off a model from image target to SLAM like that? Would keeping the models attached to the image target (poster) ensure they don’t drift if the user looks around the room? Or would using LightShip VPS actually be best here, since this is site-specific (although inside a private office). Given the tight timeline of this school project, I don’t think I’d be able to experiment much with each potential method , so I could really use some guidance in figuring out which implementation path to focus on. Any help would be much appreciated!!!
(Also, fyi I do have a Pro subscription, and am working on this project using the cloud editor.)

I would recommend taking the second approach mentioned:

place the models via the image target, but then hand them off to world effects

This sample project does exactly what you’re looking for: