yeah, I was thinking similarly to your EA Ermor guide in which you suggested going for that very underused Acashic Records spell. also since R'lyeh doesn't really need to get conj early, and Evo6 also opens up Mind Hunt, Wrath of God(if you put A+S on your pretender it might be worth it) and other goodies, and of course only +1 for Nether Darts. so rushing for it has other benefits besides the Strands, thus keeping up with the tempo which you discussed quite a lot in this guide. but I guess it's just too hard to pull off if you need a high S+rainbowish pretender to actually make it work like that.
otherwise, I think either a GK with S6D5N4 or Lich(not master, the regular) with S6D6N4 with Dom9 T3S3C3D3L3M1 is very affordable and leaves only 2 and 4 unused DPs respectively, so a very efficient build too. didn't try the Lich out as an SC too many times but each time I tried the GK UW I kept running into Hydromancers
and it's not like they appear in scout reports so you can never know until you run into them, which is why I'd probably prefer the immortal Lich(also allows for D6 instead of D5 but it isn't such a big deal) as long as he can actually take on indies as well as the GK.