My two cents in case it helps:
I voted for fformadesign, although I concur with other people and have to say that the double 'f' is redundant and would recommend dropping it. Since 'forma' is a latin word which is currently in use in different modern languages, writing 'fforma' could be interpreted as a misspelled word (the same reasoning applies to 'formd' or any other variation of this additive method). Also if the first 'f' stands for 'free' or 'forward' the whole abbreviated form of the name is then non cohesive.
Well, that's just the opinion of someone who doesn't like contorting language without a reason to do so, so take it as it is and do as you please, after all is your company so picking something that will make you proud and happy is probably a good strategy.