The manual for the SN11RG shows no connections on the backs of the wireless surround speakers (confirmed by the fact that they are mounted to sit flush against the wall). Unfortunately there is no way your Marantz could power these. And the NR1711 doesn’t have pre-out jacks for its surround channels; only for main LR, sub and zone 2 — another strike against what you would prefer to do.
As Drengur said, wired is the best option, but since you say it must be wireless, you can buy a receiver with surround pre-outs, any set of active speakers, and a wireless transmitter system. SVS, Outlaw Audio and Best Buy's Rocketfish brand all offer these. Keep in mind that you will need to supply wired AC power to any active speakers, as well as left and right RCA cables running from the receiving transmitter to the speakers.
If you want an AV receiver with integrated wireless surround speakers with no extraneous cables like the LG soundbar you have, the only manufacturer that I know that makes this is Yamaha with a number of their MusicCast speakers and receivers. Absolutely no mixing and matching of brands, so your Marantz would again be out of the picture.