I do not have the kit, nor have I seen it. I have all the regular T-64 kits. Sergej (SP Designs) and several other people have commented to me about the kit in e-mail and basically, it will give you a good conversion for the level of detail found in the SKIF kit, but nothing spectacular. Noone was too jazzed about the PE flaps for the ERA, but I have not heard anything other than them not being too thrilled (Yeah, I know, not too helpfull).
That said, the SKIF kit is the SKIF kit. The Skif T-64B turret is poor, resin bits or not. I know this sounds self-serving (it isn't) but if you really want a advanced T-64, I would get the SP Designs T-64U. It is essentially the T-64BM with the only difference, I believe, being the cross wind sensor and maybe some internal bits. The SP Designs kit, 224, is REALLY a nice conversion. I have built one and won Gold at AMPS with it. It also has a partial turret interior. And the SKIF kit you have would work as a base kit to convert.
Now, having said that, if you still want to just work with the SKIF kit you have, and there is nothing wrong with that (just more work for you), you ABSOLUTELY need new tracks. I recommend Master Club, but Miniarm also makes a set. The Eduard PE set for the T-64B is also a good thing to grab, though it may be a bit hard to find (eBay?). A new barrel fro RB models would also help, but is not absolutely essential.
As Proof I am not mental, here is my build. Skif T-64B, Eduard PE for the headlight guards, SP Designs kit 224, and Master Club T-64 tracks: