2 WAN 4 VLAN

Hi guys, im starting in this amazing world of routeros, first week and i already started to head hit against the wall.

I have a RB4011, 2 WAN with static ip and 5 Vlans, i need to route all the traffic thru WAN 1 except one of the VLAN and need also to make port forwadings to different devices on both WAN and Vlans.

WAN1 123.123.123.123
WAN2 124.124.124.124

VLAN1 10.10.10.0
VLAN2 10.10.20.0
VLAN3 10.10.30.0
VLAN4 10.10.40.0

I need to forward port 5555 from WAN 2 to device 10.10.20.250 on vlan2
VLAN 1,3,4 use WAN1
VLAN 2 use WAN2

Any help will be much appreciated.

regards