About to Reinvest in Filters - Lee?

[Atomic]

My main equipment:
- Canon 450D w/kit lens
- Tokina 11-16 - with hood
- Canon 70-200 F4 L IS - with hood
- Tripod

Filters:
- Screw in CPL for each lens
- ND 106 screw in for the Tokina
- screw in grad filter for the Tokina

I've played about with the screw in grad, and I think it maybe a bad purchase considering what you can do with the square/rectangle filters.

If I go with Lee, is this the correct setup:
- 77MM adapter ring
- 67MM adapter ring
- Holder
- Grad resin soft set
- Tintless cloth
- Filter pouch

I'm not to sure if I need universal lens hood or not - I have got in the habit of using the lens hoods that came with the lens.

I have no problem using the CPL's with the holders even though it maybe fiddly. I will keep my screw in 106 ND filter, but can that be used in conjunction with the Lee system or do I need to get their versions of the ND filter?

I like to shoot anything really; landscapes, scenic scenes, sunrise and sunsets, but the grads mainly to deal with the bright sky.

Not to sure if I need the hard grads - I don't think I will be doing shots such as seas, but maybe lakes with hills and mountains.

I may as well use the screw in grad as a frisbie.

Thanks for help.