When snapshotting Play you should allocate collateral between shorts and longs based upon the price feed.
I also feel that AGS/PTS deserve more than BTS simply because AGS was used to fund your grant Hack Fisher. So I would reverse the allocation if it were up to me. 10% BTS and 40% AGS/PTS.
I would also not do a pre-sale of any form. Launch and fund with dilution.
That said I am just one opinion of many so do what you think is best.