Sorry, but it's not. You cannot combine a Sonos soundbar with Sonos front speakers. The soundbar is not a center, but a combination of a center and FL and FR and Sonos does not allow/cater for combining two extra front speakers. The rest of your proposed set up will work fine though……..

thank you so much fro your answer, could you please tell me that , do we require and 3rd party AVR (amplifier) for the surround setup , or we will control from the SONOS APP as we do it for other products. 

The surround settings are part of the app, it will not use your AVR.

Mr.106rallye could you please answer this ; 

Front Speaker - One SL - 1 Pair Right and Left 

Rear Speaker - One SL - 1 Pair Right and Left

Center Speaker  - One SL 

FrontSub - Sub 

Can we make this setup as surround setup 5.1 (surround setup) or de we need any Port or Amp from Sonos , if yes then how , if not then why ? 

if this setup work as surround setup then we can use the same setting for Sonos five and Sonos One. 

There is no Sonos setup that allows three disparate speakers as fronts. You get a choice of one of the Sonos soundbars, which has right, center, and left speakers built in to the one enclosure, or you can use the Sonos Amp with a pair of non Sonos speakers, which then create a ‘phantom’ center channel to go with the right and left front signals.

In either of those setups, you can add a pair of Sonos speakers as surrounds, and a Sonos Sub.

You also have the option of using the Sonos Amp to drive a pair of your own speakers as surrounds in either situation above, but in that case, the Amp loses the Sub output, and can only drive the surround speakers.

Just to clarify. A Sonos 5.1 system always consists of a defined set of speakers.

Front FL-Center-FR: an Arc (that also does Atmos) or a Beam or an Amp with non-Sonos speakers (the Amp will create a “phantom” center). I would not use in ceiling speakers for front speakers when using the Amp.

Rear (RL-RR): two One (SL)'s (see below), or two Five's or an Amp with non-Sonos speakers.

You can combine all of these with one or two Subs. When using the Amp for front you can also connect a non-Sonos sub to it (cabled). Since the Sub is not directional, there is no such thing as a “FrontSub” that you mention.

Since you do not need a microphone on rear speakers for voice commands (Google Assistant or Amazon Alexa) when using a Beam or Arc (both are already equiped with microphones) , two One SL's as rears will do. If using an Amp for front and you'd want voice control one One SL  and one One wil do because Sonos will only use one  microphone.

Two Five's as rears is possible, but can be conisdered overkill.

The Amp is made to connect non-Sonos sources to the Sonos speakers and vice versa. You can connect a record player to Sonos and/or connect Sonos to a stereo receiver (to play Spotify for instance). The Amp (when used as front in a 5.1 set up, not when used as a rear) can also be used to connect a non Sonos source as a record or CD-player to the Sonos system.,