Here's the twist for me: Can I design my own?

I've been reading some books on embedded design or making your own PCBs and they had tutorials in eagle.

I took digital electronics courses and...is doing a schematic really as easy now for SoC design as it was for putting TTL chips on a breadboard? There's the routing that needs to be done, and I am SO SERIOUS about doing this, I will buy the full version of Eagle (Orcad is $10,000 or so).

I still feel like I don't know what to do, though.