I'll try to be a little less abrasive, but I've got to echo some of Akula's concerns.
The impression I'm getting is that the range is going to be essentially WW2 in space. This may not be actually be what you are going for, but it is the image I'm receiving. So before worrying about pricing and set composition, some concept art and/or some background fluff would be appreciated and will sell the idea (to me at least) a bit better.
You've already essentially set a price for these figures that people will expect you to stick to. Should you have to revise your pricing then this will become a stick for people to beat you with. Asking whether people would prefer 10,20 or whatever no. you like and not presenting a price will still give you some idea of how to compose your packs, without this happening. I can appreciate that you might not have expected people to dig their heels in over a ballpark figure, but some will.
Likewise I have no opinion whatsoever about WF, but it is unprofessional to run down the competition, justified or not, in an open forum. Even the hint of something like that has ensured that I'll never buy figures from a certain manufacturer and I'm probably not alone in that view.
The poll is a good start for determining a possible level of interest, but it is pretty meaningless to me in view of the comments myself and others have expressed. I'm also feeling 'gimmicky' with the mention of extras in the last field, particularly as I know there is no such thing as a freebie. Everything you include in a pack, even down to the packaging, adds value to the set and hence cost - cost that will need to be included in the pack price for you to break even.
I'm not going to comment on any other research or preparation you may or may not have made, you'll know yourself how much. Hopefully at least you'll be aware that initial set-up cost for plastic is more expensive than for metal and that because your product will sell for less, you'll have to move significantly more volume to break even. All of the companies currently engaged in plastics produce mass volume 'bread and butter' sets for a reason.
I do wish you luck though and maybe if you come back with something more than you have at present you'll gain a potential customer.