Graco Ready2Roll vs. Modes Adventure Wagon?

Thanks for advice the other day on getting an infant carseat with a rigid latch system… I'm 95% sure we're going with the Graco GoMax, since it doesn't seem the Joie Mint Latch has a compatible wagon? For reference, I have a Chevy Bolt EUV, so not a huge trunk. My son will be almost 4 when the baby arrives and a stocky 35 lbs.

1. Love that the Ready2Roll has a lie-flat mode AND carseat adapters included. Not a ton of reviews out there though, but it's supposedly not that easy to fold.

2. Modes Adventure seems to be popular, but it seems like the carseat with the ($70 adapter) takes up a lot of space? And it doesn't lie flat on its own?

If you know of any other compatible wagons, I'm open to them also. Thanks!