Winterfell is the name of a castle in George R.R. Martin's A Song of Fire and Ice series, from which about half of the lyrics are drawn, but it could also be read as Winter Fell, which could be anything. I like it in that it's a cool name on it's own + it also has a pretty sweet meaning.
Unfortunately, a couple months after forming the band I discovered there was already a band called Winterfell, who also wrote a song called Winter is Coming...fuck. But they broke up, and only wrote a couple songs about the series, so I chose to keep the name; if they object I'll change it but I hope they'll be cool about it if they ever realize I exist.
The scream could be cool, it's just kinda loud and in my ear. It's really not a big deal, if it's hard to change...this is why I love computer recordings, no trouble to turn down.
For that song...lyrics are written and I've growled them to myself and it sounds pretty good. Pretty badass too, imo. I'm gonna borrow an SM57 from a friend and demo up some shitty vocals so people can understand it better. I doubt I'll find a drummer who can play that double kick stuff, but I think it could work slower. It's more trouble than it's worth to program drums in multiple time sigs and tempos for a demo like that, so the double bass is honestly faster than it should be.
My friend has an album of wolf howls for some reason, so I got the idea to begin the song with a short bit of wolves howling, maybe some wind or something - brief, not annoying. That's why it starts with that riff played with no palm muting. The idea is it'll start with eerie howling and wind and then go into this sludgy, distorted riff, then resolve into the second part as drums come in, then go into the verse. I hope it works. Thing is, it feels really inorganic at present. I'm hoping to do a sorta live-in-studio thing for the final recording to avoid that.
btw on the bassist thing you could try musicianmatch, I just discovered it and it looks pretty useful, already found a drummer in my area into metal (AT LAST). Unfortunately he's also into slipknot, but hopefully this can be overcome.