Rock climbing

Building a climbing wall at home. I’ve never built anything that needed foundations, its nerve wracking but also pretty nice to see it come together. I’ve got a fairly grand design of 2.4w x 3.6h at 40deg (moonboard style) connected to 3.6w x 2.4h at maybe 5deg for fun traversing, connected to 1.2w x 2.4h vertical for toddler fun.
First phase is moonboard. I’ve dug a foot well about 30cm deep to bring the whole structure down below 3m height and not need council approval. The kickboard will sit down in there, and the wall proper will start from about ground height. The materials were all delivered today, and the first foundation hole got a bit of work at lunch today.

The materials are:
Frame - 90mm x 45mm all over. Frame, studs and ribs (no idea of the jargon here).
foundation connectoring - concrete hole will be 700mm deep, 200mm square. Stirrups are pryda high wind 600mm 90x90.
Posts - rougher header 90 x 90 - I had no idea what rougher header was until this week. Its more than nice enough for this.
Ply - Had hoped to go 19 or 21mm, but local place that isnt bunnings only had 17 and i hear thats about the minimum, so I went with it. CD grade, also had no ide what that meant til this week.

The plan is to start with easier holds on teh 40deg wall and slowly build up to the school hold sets… I play around on the board at local gym and while I can pull a move on it, its not going to be much fun and probably an injury maker to start. Anyone have thoughts on holds? I’m thinking uncarved bloc (theirs and the brands they stock) and big red. Would like to stick to Aus made.

I will have pics on instagram as I go. Any input here would be super welcome!