Chris

If signal is an issue they can fit a booster. Your only real problem is going to be getting them to run a cable across open ground, or burying it. Your best hope is to dig a channel yourself, and if you want it armoured, put your own ducting in. The install teams are under severe time pressure and it's highly unlikely* your install tech would do any digging or back-filling.

* For which read, totally not going to happen