advanced-queue HFQ and LAN-to-LAN questions

Hello,

I'm trying to build a QoS policy that would result in:

• VoIP handsets getting priority and guaranteed data
• Staff network guaranteed minimum of 1.5mbit/sec each direction (but should be able to utilize any available "spare" bandwidth)
• Everything else (default) just being able to use what's left (but ideally one single host shouldn't be able to monopolize the remaining bandwidth)
• Inter-LAN traffic should have much more generous limits

I have some questions:

1. With any of the "bandwidth" settings, is that bandwidth allocated only for that particular queue? Or is any bandwidth not needed able to be utilized for other queues?
2. When using HFQ max-rate is per-host, correct? Is that a hard cap? I would like it to just be a minimum guaranteed bandwidth setting whereby hosts could acheive higher bandwidth that wasn't allocated elsewhere. How can I achieve this?
3. Will the default rules allow a host to monopolize all remaining bandwidth?
4. Will my LAN-to-LAN configuration work? Do I need to specifically create upload and download queues?

Please see the below sample policy I crafted (but haven't been able to test yet):

advanced-queue {
	branch {
		queue 100 {
			bandwidth 20mbit
			description "Upload"
			parent 1
		}
		queue 200 {
			bandwidth 20mbit
			description "Download"
			parent 1
		}
	}
	filters {
		match 10 {
			attach-to 1
			description "LAN to LAN"
			ip {
				source {
					address 192.168.0.0/16
				}
				destination {
					address 192.168.0.0/16
				}
			}
			target 10
		}
		match 100 {
			attach-to 1
			description "WAN Up" 
			ip { 
				source { 
					address 192.168.0.0/16 
				}
			}
			target 100 
		}
		match 101 {
			attach-to 100
			description "VoIP Up"
			ip {
				source {
					address 192.168.20.0/24
				}
			}
			target 101 
		}
		match 110 {
			attach-to 100
			description "Staff Up"
			ip {
				source {
					address 192.168.30.0/24
				}
			}
			target 110 
		}
		match 199 {
			attach-to 100
			description "Default Up"
			target 199 
		}
		match 200 {
			attach-to 1
			description "WAN Down" 
			ip { 
				destination {
					address 192.168.0.0/16 
				}
			}
			target 200 
		}
		match 201 {
			attach-to 200
			description "VoIP Down"
			ip {
				destination {
					address 192.168.20.0/24
				}
			}
			target 201 
		}
		match 210 {
			attach-to 200
			description "Staff Down"
			ip {
				destination {
					address 192.168.30.0/24
				}
			}
			target 210 
		}
		match 299 {
			attach-to 200
			description "Default Down"
			target 299 
		}
	}
	leaf { 
		queue 10 {
			bandwidth 500mbit
			description "LAN to LAN"
			parent 1
			queue-type sfq1
		}
		queue 101 {
			bandwidth 896kbit
			description "VoIP Up"
			parent 100
			queue-type FQCODEL
		}
		queue 110 {
			bandwidth 1.5mbit 
			description "Staff Up"
			parent 100 
			priority 3
			queue-type HFQ_UP
		}
		queue 199 {
			bandwidth 1.5mbit 
			description "Default Up"
			parent 100 
			priority 5 
			queue-type sfq1
		}
		queue 201 {
			bandwidth 896kbit
			description "VoIP Down"
			parent 200
			queue-type FQCODEL
		}
		queue 210 {
			bandwidth 1.5mbit 
			description "Staff Down"
			parent 200 
			priority 3
			queue-type HFQ_DOWN
		}
		queue 299 {
			bandwidth 1.5mbit 
			description "Default Down"
			parent 200 
			priority 5 
			queue-type sfq1
		}
	}
	queue-type { 
		fq-codel FQCODEL {
		}
		hfq HFQ_DOWN {
			host-identifier dip
			max-rate 1.5mbit
			subnet 192.168.30.0/24
		}
		hfq HFQ_UP {
			host-identifier sip
			max-rate 1.5mbit
			subnet 192.168.30.0/24
		}
		sfq sfq1 {
		}
	}
	root { 
		queue 1 {
			attach-to global 
			bandwidth 600mbit 
			description "Root"
		}
	}
}

Thank you for your time in advance.