I've researched replacing the alloy poles on my Nemo Hornet Elite tent. After learning about issues with carbon poles I decided the minimal weight savings wasn't worth it. Cost wasn't really a factor in the decision. If you want a good source for quality options to DIY a lot of your own gear Quest Outfitters has a good selection and a well laid out website.
I've done a lot of bikepacking as well. Did the entire Divide route in 2017. I didn't have my current tent then but it would've been nice. The Nemo tent was definitely pricey even on eBay but even several years later I'm not sure I'd trust anything off of AliX. A quick look at the tent you bought shows a weight of about 3 pounds. The 2P Nemo weighs about half that and likely packs down considerably smaller too.
It's stories like these that reinforce my preference to do a couple of shorter overnighters before committing to a longer ride with new gear. BA makes good gear as well, hopefully you got one that you really like.