Supa Peg Galvanised Steel Ridge Rails

I am needing a pole for the centre rail for my canvas tarp. It is 3.5 metres wide. Wondering if this will do the trick?

I’m using a 7.5 x 5.5m tarp over my Blackwoof twin 300. I don’t use a ridge rail currently but am looking to sure things up a little. Because of the ‘T’ shape of my tent I can’t use a ridge support pole. Can you check how sturdy/how much flex this has at full extension? Thanks

My tent, Kodiak 10x14, already has a galvanised pole across its roof. I want to attach a 3.5m or longer spreader bar from the tent roof pole via C clip to a spigot to make a larger awning for my tent. I already tried combining the 3.65m eye to eye and 3.05m C clip poles into a single C clip to eye pole but it's a bit too short.

If I want to span a 3.65m tarp width with one of these, would this be a sturdier option than a spreader pole, meaning I could then get away without a centre c-clip support pole? Was thinking of 2 c-clip supported spreader poles on either end of a tarp set up, but one of these in the centre to remove the need for the centre c-clip support?