I just learned that Montgomery County (Alabama) has a 40-day time period for tax-sale redeeming parties. 

So 400 gals/day, times 30 days, then times the water cost per 1000 gallons ($3.95), came out to around $48 so I rounded up to $60 to be more conservative.2.

It will only be occupied during most daytimes as we work on it.

There goes another day.

In the email she asked me some questions, such as she thought when she rented the room, this house should only be allow women in the house, why my male friends and male relatives only come in this house in the day time.

I have interest down to 10% and daily points of $45 per day. 

Yes you can make contributions to the solo 401k while also participating in your day-time employer's 401k provided you have net self-employment income.

When would be the ideal day/time to hold it?

That verifies their face matches the ID card and gives evidence they were on you property at a certain day/time.

We only stop by properties during the daytime, but we drive by them often.