I haven't tried Sleepers, seems hard for me to justify the deckslots, but it may not be a bad idea. In this deck, it doesn't have the added advantage of clearing out a current, because it doesn't really care if Rumor Mill is out. Are you saying to switch the 2x BLC and 1x FiHP to 3x Sleepers? Or are you saying to switch to 1x BLC and 2x FiHP. BLC does help draw you into agendas when you want them, so it should help to mitigate your problem of being stuck at 6 points.
There may also be a playstyle difference. I'm drawing most turns with this deck, because most of my econ is burst-y, and I want to be shoving something in the remote, making it more taxing, and/or shoring up servers. And you also want to aggressively push out the GFI, which also avoids your 6 point problem, here's what I wrote in the description:
TIP: Rush out a GFI early. Do it if you have like 70-80% chance to be successful. You've pretty much won if you can pull it off, but if they manage to steal it, it's not the end of the world. (Also, I think I've seen Turntable once in the last few months; I guess Anarch have gotten cooler consoles.) This is not a FA deck; it's mostly a rush deck that can close out with Biotic. You want to score out agendas over two turns, because it's a whole lot cheaper than FA.
Are you often installing over your Launch Campaign? If not, Adonis pays out the same total for the first 3 turns, with the option of a 4th. So, unless you need the incremental payout for the first 2 turns, Adonis seems better. And it's a bigger target for the runner; they may leave a Launch Campaign ticking down, but they really want to get the Adonis.