Limits of a new MTBer and a 80mm Hardtail

Hi All
Just wondering what a 80mm front suspension hard tail would be like at places like Nant Yr Arian and Coed Y Brennin I have only been riding for just over a month, I have ridden off road motorbikes for years so have an idea of how to ride off road, but I have over 12" of suspension on my motorbike.
Everyone tells me the tyres on a mtb are good for grip and not to worry to much about that, how big of a obstacle can you ride with 80mm ( Rock Shox Recon Silver air forks) just like to have a bit of an idea so I can plan my route up or down a section, before I think I wonder if I can go over that or this and end up on my face thinking shouldn't of done that
Just wondering what a 80mm front suspension hard tail would be like at places like Nant Yr Arian and Coed Y Brennin I have only been riding for just over a month, I have ridden off road motorbikes for years so have an idea of how to ride off road, but I have over 12" of suspension on my motorbike.
Everyone tells me the tyres on a mtb are good for grip and not to worry to much about that, how big of a obstacle can you ride with 80mm ( Rock Shox Recon Silver air forks) just like to have a bit of an idea so I can plan my route up or down a section, before I think I wonder if I can go over that or this and end up on my face thinking shouldn't of done that

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When I started riding I had a crappy Dart 2 fork on my hardtail and it was my ability, not the bike's that held me back. Someone will be along soon with a photo of someone riding a rigid down the World Cup course at Fort William.
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It's about the rider, not the bike.
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