Quote Originally Posted by drew225
The fan I just bought is a VenTech 6-inch 440 CFM Air Duct Inline Centrifugal Hydroponic Exhaust Fan, im not sure about the other fan it was given to me. (Its not as heavy or puts out as much air as the 440 im sure) And the tent is a Reflective Mylar 96" X 48" X 78" Hydroponics Grow Tent Hydro Box Hut Cabinet
I'm unfamiliar with either of those brands, but that's a decent size tent. You don't mention the weight of your filter, but that is normally the heaviest piece of hardware we have to deal with.

If you have faith that the supports available in your tent are up to the task of handling the weight, then I'd say that's the way to go.
It can be a challenge doing it alone, having to support the weight, while getting it secured. I've found that a set of ratcheting tie-downs make the job a breeze if you are doing it solo. Nothing fancy, mine are small with a 1"x15' strap.
There are a number of ways to secure the parts once you get them up there. (didn't the tent come with straps for that purpose?)
I like to use some heavy-duty bungee cords, they can help in isolating some of the fan vibration.