How to build an upcycled garden gate?

[kitfriendesq]

My wife fancied us doing a version of this upcycled garden tool gate for our side return...

Inevitably actual construction is somewhat more complex and I'm still not used to the local selection of timber etc coming over from the UK so could do with some help please - once I've got materials sorted I'm happy with all the carpentry fun. Anticipating slight issues making sure the gate doesn't slump under the weight of tools at 1.5m wide in our scenario (might end up needing a diagonal reinforcement one side).

I've knocked up a quick sketchup model with the dimensions etc (actual tools will vary, but cloned for the sketch) https://app.sketchup.com/share/tc/northAmerica/Qh5rze4Rm-k?stoken=we9dYmN0NzuqAFnad5xxwkww-Y4DriWnS1... 

My starter questions! - 

1) I've assumed doing 2 metal posts would be better for longevity than wood, so modelled 2 Australian Handyman Supplies 75 x 75mm x 2.4m Galvanised Steel Fence Post - is this a good idea, and if so, what's the best approach to doing rails for the palings and gate hinges to attach to? I can find a tutorial for wood fence posts notching in, but not much on doing it with steel fence posts... maybe I'm mix and matching approaches too much.

2) Palings wise for the sides I've assumed 75 x 16mm 1.8m Fence Paling H3 Treated Pine Batten Wet but recommendations welcome

3) For fence railings and the gate frame I'd slightly randomly picked 75 x 38mm 4.8m Fence Rail H3 Treated Pine Wet Sawn but any more logical pick for either welcome. 

[EricL]

Hello @kitfriendesq 

Please keep us updated with your progress, we look forward to seeing your gate finished and ready for use.

If you need further assistance, please let us know,

Eric

[Dave-1]

Evening @kitfriendesq 

Half way there is half way there!  If you could see how I sidestep projects, think of things to add to projects, see something else or even start other projects you would probarly go "ahhhh so we all do that" Its part of the process, I find I do that when there is something I am a little unsure of with what I am doing. Once I push myself I start to enjoy myself again but man its scary. Cant wait to see you continue your project !

Dave