I'm thinking of getting the full reclining lazyboy loveseats, how much space I need to leave between the chairs and the wall?

Depends if u have kids. i usually put bout 1inch away from the wall and i have a 3yo i guess the older ur kids are the closer to the wall you can get seing as they wouldnt run around or jump on furniture as much.

If it is fully reclining you need to leave a little bit more than the height of the chair's back. For example: if the back height is 19", then you need to leave about 20" between the chair and the wall behind it.