Hello,
thanks to fill my great ignorance; with your help I resolved the issue.
Now I have this in the rule for LAN interface:
0_1535450259748_pfsense_rule_1.png
and on the outbound NAT I set the correct interface:
0_1535450301470_pfsense_rule_2.png
But now please you can explain something about that?
The first thing is how I can go out via the 88.45.191.140 path even if I am on the WAN interface; or better, when I do traceroute I see that correctly I go out through the "desired" path and not that it is of default.
The second question if about the starting path, i.e.: with the configuration that I have done initially I've seen that the flow is:
192.168.0.3 (swi1)
192.168.0.31 (pfs1)
network desired hop
while now with the correct gateway setup on lan->net 7 rule I see only
192.168.7.7 (swi1 address hsrp for net 7)
*network desired hop
so it seems that the pfsense is not engaged.
Thanks.