MIRR PV of cash flow from investment phase

Hi, I believe everyone is familiar with the MIRR formulae, just there is one thing I am not sure, the PV of the cash flow from investment phase, what exactly should be included in calculating that?

let me use a example: a project last for 5 years
a) . initial investment of $10000 of machinery at year 0
b) . additional investment $ 6000 of machinery at year 2
c) . scrap value of machinery is $1000 at year 5
d) . capital allowance for year1- 5 are: ($5000),( $4000) ,($3000) ,($2000) ,($1000).
e) . additional working capital for year 0-2 are: $1000,$500,$500
f ) . working capital recovery at year 5 ( $2000)
g) . tax payable for year 1-5 are : $2500,$3000,$3500,$4000,$4500

I know item (a) should definitely be included in PV of cash flow from initial investment phase, could anyone please shed some light on whether any of the other 6 items (b)-(g) should be included as well?

I made all these numbers up myself, so sorry if any of them doesn’t make sense.

Thank you in advance!!

Jason