Test results, 1st week as pool owner, questions???

[Sardian]

Well, we have been swimming in our pool for one full week. It's a 18x36 in ground vinyl pool. We don't have the concrete around it yet, just a bunch of dirt waiting to settle.

We are doing out best to keep all the dirt out and do a pretty good job except for the heavy rain we had last Saturday, which made me spend a couple of hours vacuuming.

Here are my test results, I used Ben's PS234 kit which is super nice. Test was done last night.

FC: 5 (has been here all week)
CC: 0
TC: 5
pH: 7.2 (started at 7.2 but went down to 6.8 about mid week and I added a half box of Borax which brought it back to 7.2.)
Alk: 80 (was 90 when pool first opened but has dropped to 80, I had my jets rippling the water and believe this made the Alk drop, I have sense aimed them more downward).
Cal: 70
Cya: 30
Temp 84
Salt: 0

I'm using Tri-chlor tabs in the skimmer right now but I have an AutoPilot Dig-48 that I'm going to install after the builder finishes up on the concrete.

Questions:

1. Builder said to shock once a week. Well at the end of the first week I still show no CC. Is it still necessary to shock?

2. My FC has been 5 or 5.5 all week. I started off, as the builder suggested, with two 3" tabs in the skimmer until the were almost dissolved, then I would add two more. I have since dropped back to one tab which last about two days but the FC still stays around 5ppm. Should I worry about dropping the TC or is it OK for a few weeks until I get my SWG installed?

3. Should I raise my Alk any or is it OK at 80?

4. Any idea how much CYA each tab adds to the pool? I know I need to get it up to between 60-80 for the SWG but I don't want to go over that.

Anything else I should look out for?

Thanks,

Russell