EDIT 2: Oh hay, they moved everything to a publicly inaccessible folder. WELL THAT DIDN'T TAKE LONG. Off to the next site. Next up: ZippyShare. Also, JumboFiles is out of the question until they get their shit together (their upload sever is dead or something I dunno).
EDIT 3: Zippy is up for testing. I think I may just do a Pastebin link list in the end. That's a little easier to manage.
Thanks you guys for the suggestions. I'll retry 4shared for the SD uploads too. I think they deleted my account when they did that site overhaul.
But anyway, I'll be uploading S5 for AT and S4 for RS first for the next few days, then I'll gradually add in the earlier seasons along with Gumball's two seasons. I may just split them off into different accounts so the limit won't be so easily reached (things may get a little messy on my end but whatever).
Oh, and I'm definitely considering that VPN idea. If I can get this whole thing organized and stable,there's a chance that I'll be taking on two more shows (most likely Dragons and Gravity Falls).
There are also some concerns brought up in the last comments section:
Torrents: Yeah, there is the option of torrents, but that 6 strikes policy rolling out is among my list of concerns doing this (plus DDL seems to be the easier option for most folks). If I'm able to get a VPN later on/the "Six Strikes" policy isn't followed properly at all, I'll consider it again.
Converting HD eps to .mp4: I usually just use PS3 Media Sever to transcode them since Xbox 360's WMC is such a pain in the ass to work with, even with its own native file format. This thing's especially nifty with .mkvs as long as they're not 1080p. I'll still retest the waters and try uploading in HD .mp4 again.
Yep, just another minor setback.