Me too man, I've been a dick for the past two weeks for unrelated reasons - so forgive my condescending remarks. As for the tranny, keep me posted - i did a lot of research before i dropped mine and talked to a lot of knowledgeable people(although mines only rated for around 550hp). Torque converter is key as its something that often fails with high power levels and always requires you to drop the tranni even if it's warrantied for replacment. I went with spec-rite (10" 3200) because they were semi-local and I've personally seen them used in a race capacity with great reliability - but it's not a very drastic design, i.e. i would say get them if you were only spraying once and a while and could get bye with a well built single piece design. You need a three-piece. Most well known for that would obviously be PI, they have a bumpy rep in some places like Patriot does for heads - if i got one and had gobs of power a Billet cover would be a must. A personal suggestion would be to looking into DirtyDog performance, if i bought another TC it would be a 10" 3400 by him - he'll really tailor the TC to your car as he will explain a 3400 on one app is a 3000 on another. I haven't heard anything about Broader's TC's so i have nothing good or bad to say about them. Edge is a good choice as well, they aren't as light as some but i've heard of good reviews for their pricing.
As for Foxlake, they are a great choice - never heard a bad review of thier parts, only the amount of time they had to wait.
But in general, I don't think you need to worry about the 4R being the weak link. A stock 4R that's taken care of (i.e. cooler) takes more abuse than TR-3650's, and a built one can handle whatever you build it for no problem. The guy who helped me with my build who's been doing them for 10 years said the weakest parts are rated and good for 550hp (446rwhp or so) or so, but he'd bet it'd take 500rwhp+ the ground all day long with proper servicing and cooling. And that's with my relatively budget build.