Welcome!

As far as your schedule goes, working on the back side of the clock is tough. If you are single, you can just live the life of a vampire and do OK, although daily exposure to sunshine does play a role in our biology.

If you have a family, it can be rougher...it can be hard to get good sleep during the day with kids around, and you have to flip your sleep cycle on weekends.

From my experience, the best thing you can do is find (or make) a place where you can good uninterrupted sleep. It needs to be 100% dark and very quiet. Queit can be tough if you live in an area where there is a lot of activity during the day. You might be able to insulate a room in your house, or even use earplugs or an ANR headset.

As far as flight training, I would probably try to do it in the evening before work, after you have rested. This could be an advantage for you...more airplanes may be available, and there are many experienced, older CFI's who have days jobs and can only fly evenings and weekends. It will not hurt you to do a lot of your flying at night if it comes to that.

Costs vary by location, but I would estimate:

$5K-8K PPL
$6K-$7K IR (Part 61, including 50 hours XC)
$13K-$17K CPL (Part 61, 250 hours total time)

This is based on average student performance, which normally means more than the minimum hours required by the FAA. If you are really sharp and work hard, you can save some money.

If the school uses simulators, you might be able to save money. But I would only uses sims for basic instrument training...they are often almost as expensive as a real airplane, but sim time will not count towards total time for job-search purposes.

Prices also vary between part 141 and 61, and how often you fly. If you fly less than 2-3 times each week, you will waste flight time refreshing on things that you had already learned.