That's OK, the volume will be close enough and going a little higher with FC will be a good thing.
It will be better to go ahead and start once you get the kit. We may want to adjust the pH, before SLAM, but lets wait on the kit before that. Once that is determined, you should start on the SLAM ASAP. If you can do mornings an evenings, that will be more than OK to get this going well. Maybe it will be largely resolved by the time you are off next week. At the very least, you will have made a great start on it.
If it were mine, I would start on it ASAP even if I could just check mornings and evenings. Up to you, but that's just me.
It will be better to go ahead and start once you get the kit. We may want to adjust the pH, before SLAM, but lets wait on the kit before that. Once that is determined, you should start on the SLAM ASAP. If you can do mornings an evenings, that will be more than OK to get this going well. Maybe it will be largely resolved by the time you are off next week. At the very least, you will have made a great start on it.
If it were mine, I would start on it ASAP even if I could just check mornings and evenings. Up to you, but that's just me.