hardware saturation

im having troubles in my network, it have 380 clients.
rb1100 6 wan 300/30 with pcc load balance.
ccr1009 whit simple queues
and two rb2011 simple whit all port bridged,

basically my network is:
6 modem (cable)1100 ( one cable) 1009 (two wireless links)rb2011(two wireless links)the seccond rb2011

and i can see at night when all clients should use a lot internet the i can see between 80/120 mbps of download. but when not much people the dowload reach up to 160/190 mbps.

is enought rb1100 for that load balance?
can ccr1009 (7 interfaces) balance 6 wand and connect 2 wireless links to the first rb2011? maybe connecting all wan to a switch, 1 wire to 1009 and do the pcc load balance whit vlans? and 380 simple queue rules having more than 300 mbps throughput?
there is a max pps for each interface in rb?

Please simply your question.

rb1100 is enough hardware for do a load balance whit 6 wan 50/5Mbps?
can i connect all 6 wan to a switch, tagging diferente vlan and do the same load balance but in one etherter of ccr1009 ?

I would start with the RB3011. Much more capable over the RB100 series.