I had the opposite results when I ordered my 170. The site said 6 months so I had a plan in place for the wait.
2 weeks after I placed the order I got an email that said it had shipped.
It arrived in less than 3 weeks from order.
I get it it if you cant wait but the systems are worth the wait, imo.
I have had so many different systems over 30+ years that I wanted a complete system and was willing to wait.
The reason was an lfs had the ext 50 as a frag system and I was surprised at the quality and the complete system was simple. The stand was a plus as I would never do a wood stand again.
Sometimes a system is worth the wait, but only you can decide that.
Good luck with whatever system you go with.