LOL Go ahead split it "several more times" after that 8 way.
You want to start with 11-12db on an 8, then add SEVERAL more after that. Lets be generous and assume youre talking about "several" 2 way splitters with 3.5 to 4 dB loss on each port. How many is "several" ? Lets just say 2. 12dB + 8 dB is ~20dB of loss. I HOPE all your TV's are in arms length to the ONT, because we must consider about 6dB /100 feet of rg6 coax. Shall we even mention how temperature can negatively affect these numbers as well?
FYI, depending on distance, adding ANY splitters after an 8 puts the signal BELOW what Verizon rates as acceptable, and is a recipe for pixilation and/or missing channels.