Sale of Rental Property and disposition of improvements

In 2015 I bought a rental house for 215,000.  I sold the house this year for 315,000.  Over the course of 6 years, I made several improvements:  Significant expenses like a Roof, New Driveway, New French Doors, Wood Floors, other less expensive items.  My questions:

 

1). TT requires you to split the sale into asset and land.  The land appraisal alone for 2021 shows $160,000!  Back in 2015 it was much lower, $88,000. How do I reconcile that with the overall sales price?  Should I assign something other than $160,000 to the land portion?  Assigning $155,000 ($315k - $160K) to my asset doesn't seem right.

 

2).  How would you classify a totally new driveway when added as an improvement?  "J5 Qualified improvement" or something else? How would you classify a new French door that replaced an old sliding door?  What happens if I classified it incorrectly when I initially added it?

 

3). Going back to my sale price of $315,000 ... how do I dispose of the improvement items like I mentioned above?  TT asks about selling each of my improvements.  I don't know what my roof, driveway, French doors, etc represent in the $315,000 figure.   I know what I originally paid.  Does the total of these improvements affect my original purchase entry of $215,000?  I'm doing something wrong because I'm getting error messages during the smart review.  What step by step process should I use for each improvement so I can satisfactorily dispose of these improvements in the sale/depreciation section?