That’s just fine. And don’t worry about desense on your RT97. Nobody has ever reported desensing the RT97 at factory power levels in this forum. Now if you started running an amplifier between the transmitter and the duplexer I could see it happening, but the RT97 actually consists of a completely separate transmitter and receiver. For your purposes it should be fine.
Take your repeater and handhelds someplace clear and flat and see how much range you get.