My first mod, SKX009

[pearson1995]

Hi everyone,
I have been collecting watches for many years, I am lucky to own many fantastic watches. However, I am wanting something under the radar for work. I currently have a black bay GMT and black bay 58 which I love, but recently I am wanting a change. I would like something smaller and I have started looking at SKX013 mods. I think this is what I want to do, buy an SKX013, put in a hacking and manual winding movement, customise the dial and bezel etc. Unfortunately I can't find anything less than over £500 for an SKX013, so im looking at an SKX009, which I am worried is a bit bigger than my small wrists can wear but happy to give it a go!

Just wanting to know, roughly how much should I be looking to buy all the equipment to do this?
I think I have got an inventory here but just wanting advice on anything else I need or have missed:

Seiko SKX009 - £309. (I want a new one ideally)
Nato Strap - £20
NH36A regulated - £52
Bezel Opener - £8
22mm fat spring bars - £8
Hand remover - £10
Dial protector - £7
Spring bar pliers - £22
NH movement stem - £5
Bergeon 7024 tweezers - £26
Sub Bezel - £31
Chapter ring - £15
Bezel insert- £28
Double Domed Saphire crystal- £33
Mercedes hands- £19
SKX crown - £21
Watch back press - £9
GS hypo cement - £9

TOTAL: £632

Am I roughly correct with my estimates regarding cost and anything else I should consider?

Thanks!