I have that same tunnel. She loves it. I had it setup outside for a while and it's reasonably sturdy for periodic use at home. It's a light-weight tent material and if you use it daily - I'd be surprised if you get a season out of it, but if you want to add it to your play sessions once in a while it should be OK for a couple years and then you can decide if you need an upgrade.

PVC hurdles and weave poles are pretty easy to make and will save you some money. These 1" cups for hurdles have been good. I sometimes hold a hula hoop and my pup loves jumping through that too.