I ended up only doing a half dose for my water volume initially. Took about 2 weeks I believe for things to level out.
You can always add more Turbo Start, but I probably wouldn't add anymore ammonium chloride. Could prolong the cycle time.
My system showed ammonia for 1-2 days, then dropped to 0, then NO2 showed in the 5-10ppm range for 2-3 days while NO3 crept up to the 30ppm range. Then it processed out most of the NO3 over the remaining 5-7 days.
I started adding fish a week or so after that.
How much rock you got in there? I did a bunch of Pukani rock and 4 of the 4" MarinePure blocks. I added 4 more of the blocks back in Nov/Dec to help with NO3 processing.