what am i missing?

this is my list for the chimney for my PE super 27.. alcove install. 8ft ceiling. straight up and out. What would i be missing if anything? Is this a good price for supervent? thanks

list

sorry it worked before, anyways here is the list:
from menards.com
supervent brand. everything is quanity 1 unless otherwise noted.


6" Galvalume Storm Collar Only

Model Number: JSC6ASC

Variation: Stainless Steel

$6.29


6" S.S. Deluxe Rain Cap

Model Number: JSC6DRC

Variation: Stainless Steel

$35.99


6" Attic Insulation Shield

Model Number: JSC6AIS

Variation: Stainless Steel

$38.99


6" Adapter

Model Number: JSC6ASE

Variation: Stainless Steel

$17.99


6" Black Ceiling Support

Model Number: JSC6DCS

Variation: Stainless Steel

$29.99


6" x 36" Chimney Pipe- (3 required)

Model Number: JSC6SA3

Variation: Stainless Steel

$61.99


6 x 0/12 to 6/12 Flashing

Model Number: JSC6F6

Variation: Stainless Steel

$25.99


6" Locking Band (6 required)

Model Number: JSC6SLBM

Variation: Stainless Steel

$4.75


6inch x 24inch Pipe Length (2 required)

Model Number: 266024

Variation: Black Aluminumized Steel

$34.99


6" Stove Adapter

Model Number: 266243

Variation: Black Aluminumized Steel

$19.59


6" Adjustable Length

Model Number: 266086

Variation: Black Aluminumized Steel

$30.99


6" Universal Chimney Adapter

Model Number: 266244

Variation: Black Aluminumized Steel

$20.59



Totals
Sub Total $510.76

the class a will be at least two feet above the roof line. still have to get a final exact measurement on height but should be close. single story ranch, stove on the main floor, black double wall to the ceiling, then class a the rest of the way up. just wondering if i am missing any important pieces or if this will get it done. Is supervent any good?