Best way to mod a cell phone extender for 100 ft of reach

So I bought LCD GSM 900MHz Cell Phone Signal Repeater Booster Amplifier Yagi Antenna Kit USA | eBay to try and get some better signal in my basement.

There is a deadzone here, but 100ft away I get three bars.

What’s the best way to couple/gender change any 100ft bundle of LMR-400 that I buy?

I think the signal starts to degrade after 100 ft…