I'd like to put some work into it, carpet, backyard work (dogs digs holes), roughly 10k in plumbing (basement flooding yearly issues), and 2x bathroom remodel (kitchen already remodeled) This seems like my big opportunity to get my entire real estate future started, I am just not sure how to go about it and I don't want to miss my chance.

There is a septic tank and there are leach lines, which span out into a leach field, which is a portion of your property that basically has pipes with holes in it coming from the septic tank for the water, to "leach" into the ground.As nasty as it sounds, it's a pretty cool thing when you think about it.

and later find themselves digging out of pretty much an unnecessary hole. 

During the process of them moving out, i found out a few things that they left in the apartment. 1. keys were all not given correctly, 2. walls painted in orange, blue and green colors, holes in living room, and hallways, toilet clogged with rent receipts, garbage everywhere especially in 2 rooms, and so forth.

 As a wildlife rehabilitator for more than 20 years I have the following suggestions…  You should not have closed up the hole outside as you seem to have locked the animal into the house instead of out of it.  

I know it isn't ideal, but to help yourself dig out of that hole faster it might be a good plan for you. 

Moving rugs over cracked flooring, photos in front of holes in the walls and blinds down over any cracked windows is always an easy fix also :)

I am fine with waiting, but there is a hole in the roof.

For land, it’s a little easier; all the vacant infill lots in 85250.Properties associated with back tax, foreclosure, divorce, estate, obituary or any other "lead-type" concepts bring you as the buyer into an asset category that is associated with all kinds of reasons why these problematic transactions will not yield the results you are looking for (they are un-purchasable and send you down a rabbit hole).

Get a drill, and go drill some holes.