you could change the third falcon to a waveserpent to get 10 fire dragons in the squad.... and prob get an exarc for teh scorpions.
i WOULD recomend downgrading some exarcs... but you wouldn't be able to fit in anything else. however... if changing falcon to waveserpent... and getting rid of the exarcs you might have enough ponts for a vyper.
that might help since you only have 3 squads..
i assume the farseer goes with scorpions ?
well... GL, hope the mounted works for ya