If that model of TX supports iBus, then you would be ok just getting a new RX like the FS-iA6B and setting up for iBus.
If you decide to go with something new I would recommend the Frsky QX7 and either the R-XSR or XM+ receiver depending on whether you want to use telemetry or not. When you have a quad without OSD the telemetry can be very useful to know what your battery level is so you know about when to land, with OSD you really don't need it.
If you decide to go with something new I would recommend the Frsky QX7 and either the R-XSR or XM+ receiver depending on whether you want to use telemetry or not. When you have a quad without OSD the telemetry can be very useful to know what your battery level is so you know about when to land, with OSD you really don't need it.