I haven't been in your situation, so please consider my comments accordingly, but if you're doing well can't you continue to grow the company organically? Can your business plan prize fund R&D and marketing for the near future?

I don't know your situation, but is it possible you're trying to move at Silicon Valley, light-speed pace when it might be more beneficial to throttle back a bit?

I'd think with your continued success the money would soon be chasing after you.