The second board I linked has 4 mode group options
Low mid hi strobe sos
Low hi strobe
Low mid hi
Low hi
There are four stars and the appropriate star is connected to the outer ground ring.
There are also a few who could custom program a driver to make mode switching more appropriate to a gun light, for example four or more fast clicks to change mode, then you always get what you want. I would suggest an m1 or m2 for your flooder and a c8 for your thrower (not sure if the c8 head diameter is compatible with the 1913 mount). You can also use different leds to give more throw/flood in a given host ie xm-l/l2 for your flooder/max brightness xp-g2 for your flooder as an example.
Members relic38 and Tom E would both be worth dropping a pm about a custom build/programned driver, they are both stateside.
They will also have favorite set ups that may match your criteria, just message them and link tjisthread then their up to speed. 
There is another host I have assembled that would make an excellent flood solution for you.
Its more expensive than the convoy hosts but is of extremely high quality.