I would like to invest but I don't own a bitcoin wallet...
I think it would be wise to accept other alts; ltc, eth, dash
You would most likely receive much more funding
I would also suggest a blogging bounty campaign, those reach more users than on bitcointalk sigs will
Good luck on the crowdsale, I will wait for exchanges.
How can be that a problem? When you can easily get a Bitcoin wallet in a matter of minutes. From Coinbase to Xapo you can choose a wide variety of wallets out there. Also I think that they are accepting other coins, look at the first page of the thread you will see that they are accepting LTC, ETH and Ripple for their Crowdsale Process.